In all seriousness, I support total 100% across-the-board drug legalzation.
BUT.... watching the human wreckage that ultra-cheap/potent methamphetamine has produced in my city (Seattle), I've had to complicate my perspective. Now, I use crystal meth too, and I certainly don't want to be prosecuted for it, nor do I want to see my fellow tweakers suffer for it.
But... it seems undeniable that the logic of furnishing (virtually) unlimited opiates to a heroin addict for maintenance does *not* have an obvious parallel with stimulants. Tolerance does not build in the same kind of way, I think. Certainly, everyday functioning is way more impaired at 1g of meth a day than 1g of heroin a day.
I still think legalized drugs could improve the situation, perhaps by putting less harmful stimulants on the market that people could choose instead. But other than phenmetrazine and perhaps a couple of others, d-methamphetamine is regarded as one of the most euphoric (and long-lasting) stimulants ever marketed.
So it's not so easy to think about someone switching from a gram of shards a day to 72mg of Concerta a day, or whatever.....