Yes you did: "The drug laws started getting passed when they became a problem, for instance Opium in San Francisco."
You seem to think that polygamy and full term abortions are a problem, judging from your post, I guess that means they need laws against them.
Abortion is always a violation of rights; in my state polygamous marriage has never been legal and I'd vote against it if it came up.
Drugs were never a violation of rights, nor any more of a problem than alcohol - and like alcohol, the effects of banning them were a worse problem.
That wasn’t my opinion, that was the opinion of the Americans at the time who were passing the anti-drug, and drug safety laws.