I’m really picky about it and I only like really hot guys doing it and I don’t like it extreme like 99% of the porn that exists with it.
It’s about the transgression of it being disgusting is what gives it the appeal. Watching a hot guy continue to fuck with a shitty cock is a sort of defilement fantasy - “look how sexy this bloke is and he’s fucking that shitty asshole cause he needs to get off and can’t stop.” That’s the sort of thing I think in my head when watching it.
Or a muscle god letting you watch his hole open up and shit is like him letting you in on a secret even porn enthusiasts can’t stomach. I’ve always been big into natural hairy assholes and wrecked holes and almost everyone’s asshole widens and gapes while shitting, so it’s the only way you can see it for some people.
No way I could do it irl, because the smell alone would make me gag.