>That's the problem with drugs. They're just not safe in the same way. No matter how hard the addicts cope.
They're not safe because they're illegal and, as such, society can't impose quality/dosage controls.
That said, not everyone should use various drugs. And that generally varies by individual.
Humans have been documented (through archaeological finds) to have been using mind altering substances for 10,000 years. And likely, much, much longer.
And we're (that's a general 'we') not going to stop. The solutions of course, are quality controls, ingredient disclosure/purity and quality information about such substances being broadly available.
But that's never going to happen as long as we encourage a black market for those substances. We've been going about all this (which is nothing new) ass-backwards, IMHO