I was once addicted to an appetite suppressant. I would take two daily instead of the prescribed one. For many many years (and it worked too, I was thin). I had no choice but to quit cold turkey when the drug was made a schedule 5.

Then there is alcohol, but I'm sober 10 months.

I have never tried any other kind of recreational drug. Smoking (even though I did it once) makes me violently ill. The smell, the look, just the very idea of it. I can't even clean an ashtray without becoming violently ill. I'm completely intolerant. My neighbour smokes pot outside sometimes and the smell comes across. It makes me vomit.