So you pretty much can't argue that the butt sex or the blow job is 'unnatural", because a lot of straight people do it... so let's move on, shall we?
I think it's more along the lines of men have a bigger stigma against homosexuality than women do.
Personally, it doesn't appeal to me, but I'm not one to judge.
The real problem is the Plutocrats have used homophobia and transphobia for decades to get stupid people like you to vote against your own interests. That there's someone doing the gay stuff out there has no real effect on your life. But you get angry about it anyway.
Meanwhile the wealthy keep taking more and more of the wealth you create, and each generation has less than the one before it. And you just hum along being upset that you have to use someone's preferred pronouns.
Okay, so now you've moved away from "it's unnatural" to "it's against man's law!"
Fair enough.
Okay, there's reason why murder and rape are illegal. They do real harm to other human beings.
But if everyone in the homosexual relationship is a consenting adult, um, I'm just not seeing the problem here.