if you make something illegal, you don't reduce it's use necessarily, but you do increase the harm done by pushing users into the dark. Compare the harms of alc

if you make something illegal, you don't reduce it's use necessarily, but you do increase the harm done by pushing users into the dark. Compare the harms of alcohol abuse now to the harms of alcohol as an illicit substance during prohibition, with the explosion in organized crime that came with it. Legalizing reduced the harm.