As clop said, scare tactics DO work. They might not work for everybody, but it is evident that they work for the majority (not the minority) of the population, because quite simply there are less people using illicit drugs, then there currently are. Whether or not these people are ignorant and closed-minded or not is besides the point... the government thinks in terms of things for the majority, and well, at the time... the majority of the population feel that "drugs are bad!!"
I don't agree with them however, and it is a pity people think like this, with such close-minded views, but the fact of the matter remains... "scare tactics" most certainly do work!
I will use an example: I'm sure most of us remember the attacks on the WTC on the September 11 tragedy. Well, I am almost positive most of us all remember how "berko" the media were going and sensationalising how much of a threat these "terrorists" were to us. What happened as a result of this? Most people in America were spending, spending shitloads upon shitloads of cash on pointless, ridiculous things because they were terrorfied their lives were in danger. Alot of people went out and bought firearms, oxygen masks and these funnily-named "terrorist-kits". This is only a minor example of "scare-tactics".
and while I am on the topic of America and firearms, won't we look at how many citizens own at least one firearm. and why? Well, this is quite simply, this is a successfull result of "scare-tactics".
I don't agree with sensationalising in any way whatsoever, all I am saying is that in some cases, ignorance is in-fact bliss. (to a certain extent)
Think about it, if there were more "scare tactics" to the same extent about automobile use and alcohol consumption, in this day and age, and much, much less glorifying about these multi-billion dollar profiting industries, don't you think these industries would be almost non-existant by now?
As clop said earlier, harm minimisation is very useful for people that already use drugs. But, to the drug naive person that is terrorfied of illegal drugs and what they do to our society, it is indeed no help whatsoever. Drugs are best perceived as dangerous and therefore, will not be trifled with. (of course what I just said does not aply to the world's populace as a whole)