My stance on drugs is constantly evolving. Currently it stands:
If it's viciously addictive, it should be regulated; the more physically and socially toxic (you CAN'T go to work without shooting heroine if you're DYING FROM WITHDRAWAL) and the more addictive, the higher the penalties should be. For dealing the penalties should be a hell of a lot higher--you sell methamphetamine to minors, we bring back crucifixion. For possession and use, lower penalties--for addiction cases, I want to get people off the drugs. Possession and use are difficult because leaving them open creates problems, but attempting to address them puts people who made mistakes and now are seeking help in the line of fire--and those who repent deserve help, not punishment; they are no longer a danger to society (i.e. by exemplifying and encouraging the consumption of dangerous substances) and deserve to not be treated as one.
If it's not addictive, or just not very--if the risk is very low--then the danger to society is very low and the damage done by prohibition is extremely high. We have two options: Accept the potential risk (maybe we find out some day marijuana is like... really, worse than Heroine) and leave open the possibility to discover great benefits in the future; or reject the risks and take away any potential benefits. I can tell you straight out marijuana is anxiolytic--sure I've never used it, but THAT'S WHAT PEOPLE USE IT FOR so you know... I'm about 100% certain that's the primary positive benefit. By banning it, we're saying the risk to society outweighs the harm done by prohibition enforcement plus the loss of an anxiolytic option--is that really true? If not, then it shouldn't be banned.
Disclosure: I'm basically always on Piracetam, Aniracetam, L-Theanine, Alpha-GPC, Noopept, and SAM-e, all currently legal. I also have Oxiracetam and Pramiracetam for occasional use (also legal); and I do often take standardized antioxidants marketed as "green tea extract" standardized to 98% polyphenols, with 50% of the total mass being EGCg.
The doctors had me on Methylphenedate and Risperdal, which had vicious side effects and were terrible and relatively toxic; they suggested a mixture of mainly dexamphetamine (Adderall--78.2% dex), which is also too toxic to my tastes (but people who snort cocaine insist that dex isn't bad for you and tell me it's the best substance ever invented...). I'm on zero prescription drugs.
I've actually gotten better results out of the drugs I've picked out for myself, and can safely adjust them at will--the drug interactions are good, and doses of 80 times the standard dosage are minimally risky, and the side effects are things like headache (because of choline depletion--hence Alpha-GPC, fixes that), insomnia (I have that anyway, and Melatonin 1mg time release fixes that), and an upset stomach (eating at McDonalds does that too, and it doesn't happen to me). This works better for me, and if we just brazenly banned all kinds of shit without evaluating if it's dangerous then I wouldn't have that option.
Now, Dexamphetamine is another potential treatment route; but it's dangerous--I actually believe that, you can dispute it but let's keep context clear--and I have no problem with it being scheduled. I can get it with prescription. Cocaine I can't get, even if the doctors determine that cocaine may be an effective option to treat some condition I have--I understand that too, but if that ever happens I don't think I'd be able to argue that banning cocaine is a bad thing. I'd argue that the lack of research into medical use and access to prescription under a doctor's professional judgment is ... inconvenient, and that if there's such a body of knowledge suggesting it should be scheduled for prescription then that needs to be fixed. But I mean, hell, dangerous substances, I don't want that stuff floating around out there. Look at how that works with cigarettes.
You can be an uberlibertarian if you want and go raving that we should make meth legal regardless, that's fine, but I disagree. You can go talking about how MDMA is illegal and it shouldn't be because it's not dangerous enough to warrant scheduling as a controlled substance--I like that argument, I might disagree on the details but I *support* that argument and if that can be shown scientifically that there isn't a real basis for us believing MDMA is that dangerous then we *should* unban it. That's my opinion.
I'm far too logical for humans, I think. Most people who understand the above argument turn white and get sick.