In a short comment I don't have time to present much of substance, but I get your point. Different communities have different problems with drugs, and are affected in subtly different ways. Different measures have different effectiveness in different situations (if supply can be controlled easily for example, banning drugs outright makes much more sense). I don't think legalisation is the perfect solution, but as far as we know[1], it's the least bad solution so far, and the current 'ban it, and criminalise users' is doing more harm than good. There are many other factors such as education to take into account too. I am not suggesting legalisation is a silver bullet.

[1]: https://mic.com/articles/110344/14-years-after-portugal-decr...