Totally I'm an advocate for 100% legalization of all drugs. Though with strong regulation for things like opiates, more as replacement harm reduction thing than it being something you can get at a liquor store (and you can probably argue similarly for alcohol looking only at a net harm + addiction lens, but that kind of proves the point in treating different drugs differently because of stigma).
Probably. Weed isn't good for you either. Neither is Alcohol. At some point, you got to let people make some decisions.