They already conceded that hetero anal sex must also be considered immoral to maintain the view. Here’s what I’ve got; Anal isn’t a necessity. Homosexual people shouldn’t be framed as immoral simply for engaging in basic parts of life based on their sexual nature. Homosexuality isn’t inherently harmful and certainly not immoral. It’s not their fault for being the way they are, which isn’t wrong in any way, and it’s also possible to use protection to prevent STDs.

What is PIV?

However a lot of things can spread disease, and it’s mostly breathing.

I’d recommend to just not talk to nazis who are only permanently searching for “arguments” to justify being intolerant assholes.

Any kind of sex can spread disease.

Is it immoral to survive eating fast food all day? As far as I know it is only a health risk, not immoral.

I’d tell them that they’re in the wrong community, for that is in fact a stupid question.

Wait, is there really people using that kind of arguments ? There is a moment where you should simply stop arguing with asshole, I’m sure you heard about the don’t feed the troll

• Sexual intercourse can spread STD (not just gay sex, even worse straight sex can lead to pregnancy), this is why you should use condoms (and lube) when having sex with a new partner no matter whether you’re gay/straight.

• Sexuality is way more than sticking a dick into a hole. I am not in other person bedroom, and don’t care about what they do. Technically just like many straight person do practice anal sex, I have no doubt that many gay persons don’t practice anal sex (Also not all homosexuals have a penis, so penis into ass might not be an option either)

Not all gay people engage in anal sex.

Other things that spread disease: hetero sex, breathing, kissing, touching surfaces other people have touched, generally existing.

Therefore, if gay sex is immoral because it might spread disease, so must all those other things be.

The “argument” is idiotic enough to not really need or deserve rebuttal. People like that are a waste of skin and nothing can be gained by arguing with them. Since it would be a waste, I might as well waste that time in a more pleasant way.

You tell these people to fuck off because they are not arguing in good faith and just want to waste your time

The idea that gay sex is anal sex is a myth. From what I’ve heard, it’s mostly cuddling, blowjobs, mutual masturbation and a bit of sword fighting. For most people anal takes a lot of prep. Eating, douching, etc.

Remember reading a study which suggested a third engaged in anal sex (semi-)regularly. Ie. plenty of gay men don’t have anal sex often if at all. And for those who do engage in anal sex regularly they’re mostly using a condom or if not on something like truvada which almost entirely prevents the risk of contracting HIV.

On the other hand, anal sex is also surprisingly common in heterosexual sex. Quick google suggests just under half of heterosexual men have had anal sex. Sexual practices among heterosexual people are also often very poor. I mean, outside the gay community it’s unlikely people have even heard of truvada or stuff like that. Gay people actually do talk openly about that kind of stuff.

Is heterosexuality immoral because straight people have so much anal and take so many risks?

Don’t, there isn’t enough deodorant in the world for conversations with people like that. Don’t suffer fools.

Scan the room, make sure you know where the exits are. Look for friends and potential allies in the crowd in case things go badly. Make polite excuses as to why you’ll be leaving now. Back away slowly.

Keep in mind they’re sophists

If they start talking, be ready to make a run for it.

Then driving is immoral because it’s dangerous. Cars kill way more people than butt sex, tell them they’re not allowed to drive anymore.

Also, no more ice cream, just look say how many people die annually because of diabetes.

There are plenty of things that people do every day that contribute to the potential spreading of diseases, from every kind of sex to not wearing a mask when you’re sick.

To single out anal sex as a sign that homosexuality is immoral (despite the fact that vaginal sex can also spread diseases, and despite the fact that anal sex is not exclusive to gay people) is a sign that the person you’re talking to is biased and arguing in bad faith.

Ethically speaking, if someone wants to live by a moral system that differentiates between right and wrong based on the potential to spread disease, then that’s fine, but that logic still needs to be coherent and apply to all things, not just selectively to things that they dislike.

But anyway, if they’re sophists, you probably aren’t going to convince them. If you have to engage with that shit, then your best bet is probably the socratic method: ask them targeted questions to poke holes in their flawed logic until they back themselves into a corner. You know what they’re saying doesn’t make any sense, so simply asking them questions which reveal more contradictions will force them to adjust or abandon their position.