I wonder if there’s an evolutionary purpose to it. I mean, the “male g spot”, AFAIK, is the prostate. It makes sense that it’s super sensitive, it makes cumming feel good. It had to go somewhere where it wasn’t too far away from the rest of the factory, and ideally (from an evolutionary standpoint) it shouldn’t be directly accessible to stimulation, so that the males still want to have sex. So, that location kind of makes sense? I mean, most men probably wouldn’t think to put stuff up their butts without knowing what lies behind (right?).