But I disagree that drug policy is judged on the merits you mention; we have evidence of decriminalization in portugal, and its relative success in preventing destruction. Meanwhile elsewhere in the world there is very little appetite to entertain the idea of decriminalization or legalization, despite evidence supporting the theory that prohibition exacerbates the effects its intended to directly prevent.
Humans are not well-adapted to the temptations, challenges, and weird outcomes of modern life. Many people - probably most people - need to have their world and their choices shaped by social policy and group morality. Left with total freedom and no guidance, they would destroy themselves because they couldn't understand or handle the perverse, distant, brutal, unpredictable outcomes of their decisions.
We're just not evolved to thrive in a world with World of Warcraft, heroin, credit cards, sugary drinks, alcohol, motor vehicles, birth control, mass media, porn, reality TV, glamour magazines, Photoshopped models, etc.
The more our world diverges from the conditions of our ancient ancestors, the more it needs to be shaped. And as a very individualistic freedom-loving person, I hate saying this but it's true.
Grown adults can make their own decisions and suffer the consequences.
Acting like you have a right to tell other people what they can and can't do is incredibly egotistical.
Not in any western country. People are heavily insulated from the consequences of their actions by the welfare state. We even subsidize their ability to bring children into the world and (most likely) raise them poorly.
I'm not even pro criminalization, but, c'mon man.
The state should provide a certain base level safety net, especially so those who realised they messed up have a way to turn things around, but society should allow people to learn from their mistakes. It's important to give people that freedom to grow, even if it takes some self-destructive behaviour before someone wants to turn their life around. Actions that affect multiple people should be handled differently, but if all I'm doing is making myself unhealthy then perhaps I just have different priorities. In short, freedom should include the freedom to mess up.
Simple non-aggression isn't good enough. We all depend on others contributing to society. The standard cannot be that you simply must not actively cause harm. The standard must be that we each contribute positively.
None of us ever reached adulthood except by the contributions of others - parents, social services, earlier taxpayers, soldiers, etc. You owe those contributions back to the next generation, and to the people who share society with you.
If you're strung out or dead from foolish drug use, you cannot contribute. You cannot pay that back, and you are a wrongdoer for taking without reciprocating.
Any other attitude will create a non-viable society over the long term, and spread great suffering.