Just considering it, it seems unlikely that the incredible economic volume of the hard-drugs industry is drivem by homeless people collecting change and redeeming cans.
Anecdotally, I know (or knew if they died) several people from PhD programs adjacent to my own who were habitual users of heroin (or stuff branded as such). I have significant experience with it (originating with friends in academia!!!), and it is very nice, but it just so happens that I like pooping more than I like opioids, which apparently is a stroke of luck
Most drug user I've seen were in private clubs in Paris or Nice/Monaco where the entry ticket was north of 150 euros
I also saw about 12 different heroin addicts in the streets next to my home, but tbh they were a lot less loud, aggressive and/or obnoxious than the alcoholics.
That could be because you probably assume that any drug use leads to addiction and despair. More often than not, despair leads to drug use as means for temporary escape and relief.
No, I assume most drug use leads to addiction except maybe "try once" cases, which I wouldn't call "use" like I don't call people who tried smoking once in their lifetime "smokers".
Despair is not even in the picture. Too bad you paint it as a viable excuse for making yourself even more stupid than usual.