I am a scientist myself and I relate to the idea that if you're gay and you wana do it in the ass, it is beyond your choosing because it's in your DNA, sure. The problem occurs, when you establish a fallacy by extending this way of thinking to non-biological concepts, where the line between who is infringing on whose rights becomes very grey. So the matter of "you shouldn't be bothered by two women kissing" quickly turns into "you shouldn't be bothered by the social obligation to participate in group activities" or "you shouldn't be bothered by hypocrisy, lying and gossip(aka. communication), because this is required to reach the next corporate step in our democratic society".
So we're going from accepting anal sex between two men, which I accept just fine, to accepting injustice, lies and corruption, because if we don't, it's like hating on gay people, we should accept liars and hypocrits the way they are, because they have the right to live as well. That's when the line between rights infringement is reached, because the fucking hypocrite who does one thing and tells you to do another, and when you call upon his transparency, which is a company value according to his President and C.E.O., he fires you, your rights are being infringed, and while you might be biased against people like him, he totally deserves to go suck a dick, and you don't deserve to be fired.
So anal sex is unfortunately a gateway towards much more serious social problems, because the mindset in which you are in in order to accept that, leads you to believe that people should accept a lot of shit from you as well, while God's honest truth is that no one should accept any shit from anyone. No one should be infringing on anyone's rights.