Circular reasoning. Potheads by definition are f-ups who define themselves by it. The productive citizens who occasionally partake are not likely to share that fact with people they suspect will disapprove.
Someone in my realm of life was one of the productful occasional types, had kids, now he has one less kid because in my opinion, they took their eye of the ball and left a door open for a predator. Too interested in hanging on to adolescent ways, partying, whats it going to hurt? kids are sleeping right? and not enough keeping an eye on their family. Controversial view perhaps I have, so be it.
I think it can keep people in a perpetual adolescence, which I suppose is fine, unless your raising a family.
Grow up I say to them. Let go of childish things.
Medical? fine, but I want a actual doctor to prescribe it and the active ingrediants delivered in the best medical way, and it be produced precisely by a proper company.