Fact is that society and its sexuality has entered a new stage...
We're entering the age (era) of consent, where the actions of individuals are not defined by others but only by themselves.
Children cannot give consent (legally or mentally), neither can animals or corpses. Thus the point of paedophelia, beastiality or necrophilia is void.
OK, How about polygamy. A recent issue of the Advocate had as its cover story Homosexuals and Polygamy with some provacative accompanying photos. Where stand you on polygamy? Very few homosexual (at least male) couples are monogamous.