It's hard to explain, but it still goes within the lines of gay men wanting the same things that they already have. That's self-service for you! But there's just something about semen that came from another man. And the answer to that question is his semen! Sure, you could easily masturbate until kingdom come and put that slimy, gooey, white liquid in your mouth. But what's one thing that he loves more than all those things combined? Well, the answer is pretty simple, actually. Even if gay men already have those body parts, those are still the things that they look for in other men.
You would think that someone who already has a penis, two ball sacks, and one hairy butthole would want to find the exact same things from someone else, but that's just the way it is. There are a lot of things that a gay guy wants from another man.
