Not that I agree but ok I'll take your challenge
Sex with a minor?
Exposing oneself in public?
Sex in public?
Defecating in public?
I hope you start to see my point - social norms whether you like it or not have to be set by the govt. Eventhough the party doing it may be consenting it may not be in the public interest to allow it. There are some who would say that the issues I raised should be allowed but society (not a minority of individuals) have determined it does NOT serve the greater good. Homos may want to have sex but it should not be sanctioned by a society which considers it contrary to the common good.
Sex with minor (hurts the minor, non-consensual)
Exposing oneself in public (again, NOT in private)
Sex in Public (again, NOT in private)
Defacting in Public (NOT IN PUBLIC)
Apples and Oranges. The point is what people do in the privacy of their own home SO LONG AS they aren't hurting anyone else, should be NONE of the government's business.