[wpietri]

You haven't really thought this through.

One, those substances are fine for a lot of people.

Two, some of those substances are fine for most anybody. I've never even heard of a deadly marijuana overdose, and the evidence shows no increase in mortality for marijuana users.

Three, we already tried alcohol prohibition, and we are currently trying drug prohibition. It does not solve he problem you care about, while creating other large problems.

So really, you sound like somebody who has a personal hobbyhorse and uses pretty much anything (like say, losing stars on GitHub or mentioning a book on airplane safety investigations) to argue for it. And that sort of motivated reasoning around argument for societal change strikes me as way more dangerous than somebody eating a THC edible.