Behaviors I disagree with include things like flaking on a commitment with friends, forcing your children to do activities they don't want, etc. The effects of drugs are a whole order of magnitude worse, and these effects affect myself, others, and the drug user, in potentially deadly ways. Equating these concerns to simply being things I disagree with is disingenuous.
I would argue that obsession with accumulating capital has caused several orders of magnitude more situations like the ones you've named.
So we probably agree that while we're at banning drugs all over again, we should probably do something about mindless capital accumulation as its as harmful an addiction as any other—or more! It has led to the ruin and sublimation of entire nations of people—a far sight worse than a stolen car stereo.
Or if we don't want to get so dramatic, maybe just let the people eat their damned mushrooms in tranquility and stop using such broad strokes to paint over situations.