Like the night, I have super-important thoughts.
Why did evolution select people whose rectum diameter corresponded to the diameter of a penis?
Q: Did those who gave in the ass have a healthier and more numerous offspring?
Q: Or did the practice of anal sex less exhaust the mother and leave more attention to the firstborns, so they survived? Per the ancient people who came up with such contraception were in principle more ingenious?
Q: Why did Google get interested in my location when asking about the diameter of the rectum?
And for the believers, your question sounds fairy: "If God hates homosexuals, why do diameters match?"