Seeing it in porn is what makes some men think it’s mainstream and something that their partner should enjoy, and there are many reports that it’s no longer uncommon for someone to try it unsolicited and then express surprise when his partner complains.

> Anal sex is not enjoyable? It is.

For men, yes, but women don’t have a prostate and report far less enjoyment. That doesn’t mean that it hasn’t been used for birth control (people have been joking about technical virginity for ages) but again there are many reports of women being pressured into it or having men try it without asking because those guys are used to porn stars pretending to find it incredibly pleasurable and, in many cases, not at all discussing how to be safe.

Again, the claim is not that porn is evil for showing uncommon things but the problems around misrepresentation and consent. If sites promote videos showing women pretending to find it highly pleasurable to be slapped or choked, having forceful anal sex, etc. some fraction of the men watching it are going to think that’s representative of real life. Hopefully they will talk with actual partners about what they enjoy, but that’s certainly not a given and there’s a long, ugly history of men resorting to threats or violence when they think they’re owed something.

This is another area where companies’ promotion algorithms raises questions about how much they’re contributing to a trend, too. If their design encourages studios to push boundaries harder to get more interactions, the feedback loop is no longer organic - they’re shaping the market, not just responding to customer demand.