That's what I am trying to get at- problems stem from earlier sources. Whether someone eventually gets hooked on something is a consequence of earlier failure. Whatever drug/habit is ultimately picked up in the aftermath is a genuine negative, which will have its own particulars. But it is not the initial causative agent. This is an important distinction to make, because otherwise we're just rearranging deck chairs instead of managing the fundamental issue.
To expand context, when considering appropriate drug policy at a governmental level I think Portugal's experience is important to study:
https://www.theguardian.com/news/2017/dec/05/portugals-radic...