Indeed. From an evolutionary sociology point of view, there's a reason why the vast majority of human societies had a taboo against anal sex until extremely recently: because the tissue of the anal wall is extremely delicate (unlike the strong, flexible, muscular walls of the vagina) and prone to tearing, risking injury and/or infection which may then spread throughout the community, endangering its survival.
There's plenty of societies past and present where homosexuality in specific social conditions was not taboo - the ancient Spartans are the example most people know about. The evidence we have of ancient Sparta (Pausanias, Plutarch) strongly suggests that homosexual lovers focussed mainly on intercrural sex.
Fast forward to the modern Anglosphere and there's plenty of studies and surveys from Kinsey onwards showing that gay male couples don't tend to prioritise anal penetration as their most common expression of intimacy.
Given all this, I wonder why modern society is so obsessed with anal penetration, and why it's commonly held to be so much more enjoyable for both sexes than any other form of intimacy, of which there are many, which are genuinely pleasurable and not painful or dangerous.
Porn - that's why.