Good for you. I too follow the "rules of the road" if am I driving (which has nothing to do with having a license), in case you are implying that I don't. And I have never been in an accident either. I have been tuitioned fully, and know exactly what I am doing when I am behind the wheel, thank you very much. Furthermore, I drive with care and mindfulness, and respect for pedestrians and other drivers. All of which have absolutely zero to do with having a license.
But does having a license prevent drivers from ever having accidents? No, it certainly does not. I see idiot drivers all the time, racing and swerving like macho pricks. And I have known people who have been in accidents, and witnessed them with my own eyes on many occasions. People die or get mangled every day because of motor vehicle accidents. Most of these people have licences, but it hasn't stopped them killing or injuring others or themselves on the road.
And getting a license is not going to make me a safer driver either. It's not something I even care about arguing with you about because there's no way you can tell me how much of a better driver I may be if I had a license.
A drug licensing system is not only just another way of restricting people's liberties and placing it under the supervision of government institutions who actually care less about your health and more about propping up their empire, but is also nearly useless when it comes to harm reduction, as the automobile example shows.
The number of dangerous or life-threatening experiences people are having with these compounds is minimal when compared to something like driving. Even if the statistics were proportionally matched (by taking in to account the difference between the global number of car journeys per day and the global number of MXE trips per day), you would probably find that drug use comes out significantly safer. I wonder, all drugs were perfectly legal would you be recommending they be placed under licensing restrictions.
I don’t see how “license holders still have accidents” is an exception that serves as proof against the rule. I'm arguing at the level of population effects, which is concerned with general trends of influence. Anecdotes about your safety as a driver without a license or the fact that there are dangerous licensed drivers are fine but don’t really serve as counterpoints in a discussion that’s about broad societal outcomes. Nor does it matter that the analogy to a car license isn’t perfect, because a drug license system doesn’t claim to function exactly like a driver’s license system. The analogy was merely illustrative rhetoric to support an isolated point, not the substance of the argument for a drug license system itself. Counterpoints using an analogy to the driver’s license system are not directly applicable to a drug licensing system for limited quantity supply.
The effect of a license system of limited quantity supply is one of general harm reduction, not a cure. In no way is the argument claiming the license system is perfect, just that it’s substantially less harmful on a societal level than the existing one or other established alternatives in terms of reducing problems with end-user drug abuse.
A licensing system in which only limited quantities are allowed per month (or some other interval) doesn’t absolutely prevent people from getting high and causing accidents. It doesn’t prevent people from building up their limited allocation from month to month by not using and then going on an overdosing bender. What it does claim to undermine is the possibility of a large population of addiction level use (such as exists under prohibition or any system of unlimited supply) as well as the black market. It also helps prevent totally ignorant drug use. Sure, people can still mix their limited supply of opiates with their limited supply of benzos, repress their breathing and die, but under a licensing system they would have to pass a test verifying that they knew the combination was dangerous before that happened. And should they overdose and survive, they lose their license and their ability to supply another overdose quantity to themselves legally. They also would be forced into drug testing and treatment, reducing their ability to be problem users further. Many accidents are caused by simple ignorance, and a licensing system addresses the ignorance in a way prohibition, absolute decriminalization, and absolute legalization do not.
Addressing the issue is what those arguing against any kind of legalization are arguing is needed. They choose to address it through a tough law enforcement/punishment model. The license system allows them power over drug users. It gives those currently in control some of what they truly want (power) while reducing public health harms and recognizing individuals' rights to use in moderation. You may argue what prohibitionists really want is to keep the money flowing from prohibition, and you'd probably be right, but when a license system is part of the debate it gets increasingly hard to couch those desires in arguments about addressing the public health risks of unfettered use because the license argument address those concerns explicitly in ways other arguments don't.
As stated, a license can be revoked. Does not having a license absolutely prevent unlicensed drivers from driving? No, but it does have an effect in that they can’t renew their plates and they will be arrested should they be caught driving. And, again, the driver’s license system analogy does not map on fully to the practices involved in a drug licensing system. A revoked drug license would mean there is no legal means for an individual to legally acquire more drugs themselves. So it’s not like a revoked driver’s license where the unlicensed still have a car sitting in their driveway.
An unlicensed drug user could go to other license holders and ask them to buy drugs for them, but that would mean the other license holders need to dip into their own limited supply and risk losing their own license should they be caught supplying the unlicensed with drugs, thus limiting the quantity of drugs accessible to the unlicensed. No licensed holder could make a living as a drug dealer without far greater supply for themselves than the amount allocated monthly under a license system for limited quantity purchase. Because people would need to pay to hold a drug license, there’s little motive for groups of license holders getting together to make some meager money off supplying the unlicensed. If two unlicensed addicts depended on one licensed drug sharer the accessible quantities shrink more, and so on. This is all somewhat beside the point, as those with revoked drug licenses would need to be drug tested as part of their punishment, and should they fail repeatedly more stringent control measures such as home arrest could be applied just as in the current system. All this goes FAR further to discourage problem use than any other system, and problem use is what the prohibitionists are arguing they are most worried about at the level of public discourse and public concern.
Over a short time the black market distribution network for recreational drugs would also necessarily shrink due to lack of new users funding the network, so a traditional black market source for the unlicensed to acquire drugs would also be very limited at a population wide level. What new user or existing casual user just wanting to try or continue moderate use is going to go to the expensive, dangerous, and less accessible black market when a legal source of pure pre-measured doses for reasonable prices exists? Yes, there would still be some exceptions where the unlicensed could gain access to a number of licensed friends willing to share and supply the unlicensed person’s addiction, and pockets of black market networks may survive to supply the addicted, but population wide the reduction in the ability of the addicted population to supply their habit would be profoundly stunted.
A drug license system for limited quantity supply is a concession to the larger society drug users are a part of that acknowledges that immoderate use is the real problem and offers a legal way to profoundly reduce it. It says, “We respect your concerns about problem drug use, but we’re not asking for the right to be problem addicts, only to be moderate users who can prove they are not ignorant of the dangers of use and who are willing to fund the system that gives us that right ourselves.” It says we understand individuals must give up some rights for the society they are part of to function. It’s simply not realistic, and a bit dismissive, to ask a prohibitionist society that must deal with the problems of drug addiction to leap in blindly and legally endorse a system that doesn’t explicitly address the problem in some way.
As you imply, it’s true that all non-alcohol drug use does not cause as many societal problems as alcohol use alone, and so you are right to argue that absolute legalization likely wouldn’t increase or may even decrease problems associated with non-alcohol drug abuse. But there are still problems and the powers that be demand they be addressed explicitly regardless. That isn’t going to change soon. Perhaps someday when the benefits of legalization have been established conclusively and prohibitionist’s fears have been exposed as largely unfounded the limited quantity license system could give way to a more liberal system. But in the interim it’s a way to compromise with prohibitionists and to prove that legal access is not the disaster they envision. It’s a way of taking real steps towards drug user liberation now in countries like the U.S. that are stubborn in their stance. I understand you want total freedom right now (so do I) and want to refuse to have a government babysitter, but these are not a very realistic or compromising demands at this time. To me this is not about what we'd like to have personally or our philosophies about individual freedom, it's about actually making something happen.