Ran across this blog on reddit.com,   You might skip ahead to the">John Stuart Mill and the Role of the State" part of the article.  I think the emphasis on personal harm and state interest is incorrect.  Because we rely on each individual to produce for the benefit of the community, having one individual not producing harms the community.  Proof is quite simple, welfare recipients generally only take from the well being of producers.  That lowers the standard of living for everybody.

https://www.samwoolfe.com/2018/06/should-all-drugs-be-legalised.html