First of all, you need to separate an activity's direct, real externalities from those created by draconian, stupid laws that make consuming and buying those drugs into something much harsher and costly than it need be.
Secondly, everything we do has externalities in some variably extrapolated way and that by itself is a bad, hazy-logic reason to blanket ban it. Instead, you create reasonable checks and try to ascertain motives (as we do for so many other potentially dangerous activities without banning them). If one's motive is to get high in their own private context but they can't do so without becoming a burden on the criminal justice system (because their otherwise personal activity suddenly became a public cost and the target of some bullshit moral crusade), then maybe your anti-drug laws are the bigger problem, not that individual's personal choices and their artificially constructed effects on "the community".
Yes, I know that some people high on meth, cocaine, PCP, etc can become mentally unstable and commit violent acts or crimes, but people in all kinds of reasonably, widely legal situations can also do the exact same things without whole categories of consumption and behavior and activity being banned in a heavy handed push for social purity.
Secondly, everything we do has externalities in some variably extrapolated way and that by itself is a bad, hazy-logic reason to blanket ban it. Instead, you create reasonable checks and try to ascertain motives (as we do for so many other potentially dangerous activities without banning them). If one's motive is to get high in their own private context but they can't do so without becoming a burden on the criminal justice system (because their otherwise personal activity suddenly became a public cost and the target of some bullshit moral crusade), then maybe your anti-drug laws are the bigger problem, not that individual's personal choices and their artificially constructed effects on "the community".
Yes, I know that some people high on meth, cocaine, PCP, etc can become mentally unstable and commit violent acts or crimes, but people in all kinds of reasonably, widely legal situations can also do the exact same things without whole categories of consumption and behavior and activity being banned in a heavy handed push for social purity.