“who are drunk and freely spread their legs prove themselves to be sluts?”
That would be cause we do not operate on sex shaming for consenting adults, rape is rape however and just merely being present in some species besides ours does not make it right on its own. Spelling it out for the developmentally challenged would-be social controllers in the back: gay relationships between consenting adults are both (like it or not we use it as a bar and will continue to do so) based on consent and both(or more) parties being able to give such under what we consider to be a sapient, adult human being. Children can give their consent for whole shitload of things, their brains however lack development necessary to consider consequences of their decisions like considering heavy addictions, lifelong relationships and being traumatized by a fucking adult in their own bed, therefore till we know those parts of their brains have fully developed, we don’t consider their consent for such things as legal(children, however are very well capable, as any sapient being of knowing what they are inside and are perfectly capable of communicating such facts, so don’t fucking frame this as a “decision” or a “choice” which consequences they cannot grasp. In case of a kid coming out as queer of one stripe or another, it’s simply telling you what they already know to be true, much like you would not probably question them if they told you, they had a constantly hurt stomach, you’d take them to a doctor to check it out and see what’s best course of action).
Conversely two or more consenting adults can give their informed consent to engage into a lifelong marital bond regardless of their respective genders and presentations of such. Nothing in the nature of such relationship is inherently abusive or unbalanced, unlike a pedophile’s “relationship” with their victim and the “long term issues with national reproduction rates” or other such idiocies are literal concern trolls. Outside of even attempting to prove any validity of such long-reaching and utterly ass-pulled concerns, first world human beings do not treat ourselves and each other as ant drones in a hive, we have long stood for denying much social optimization on the basis of our personal, individual freedoms, as well as the civic ones we possess. Strictly speaking, fears like those are utterly unfounded in any observable or provable reality and I would dare anyone to prove otherwise but had they been real, so fucking what? We are not obliged to breed for you, we are not obliged to structure our entire society to be stable for generations(wish as I might that we would), else we would not have a single of the giant-ass corpos eating away at shit at a rate, that can only be called insane.
Our freedoms and rights, our pursuits of happiness and fulfillment are no longer subject to your stamp of fucking approval and that terrifies you, doesn’t it?
Now as for animal fucking, perhaps you are unconcerned with the suffering and mentally breaking a sentient, if not fully sapient creature but the rest of us in the widely defined humanity very much are, therefore no legal animal fucking for you.