Are you kidding me? Almost all of those activities are restricted to significant, meaningful degrees in the U.S. Or have been in the past (e.g. homosexuality).

Are you kidding me? Almost all of those activities are restricted to significant, meaningful degrees in the U.S. Or have been in the past (e.g. homosexuality). I think only adultery stands out as not. Regulation doesn't need to "suppress an activity into inconsequence" to be useful. There are many ways regulation can beneficially impact activity in between the extremes. The vast majority of regulation does this. The extreme of "completely abolish an activity" isn't a practical or useful goal in most cases.