In my case, fapping is not something I “enjoy”, per se. On top of that, when I see a woman I like/find beautiful, I am attracted to her, so seeing her get fucked by a random guy isn’t getting my boner up. But with say, Sara Jay, who’s an ugly fuck, I can just look at that whore getting plowed, feel nothing, focus on the tits flopping around, and nut. I have no desire to ever cheat, but cheating videos make me hard because I self insert as the guy doing the fucking.
Porn is just a bit different than what you actually find attractive in a real person. Usually it’s about deeper desires that you’d normally not act upon. That’s not say that someone who watches blacked exclusively can then have a proper sex life; he’s addicted to watching nignogs fuck white women.
But for me, like I said in the beginning, only a few black /co/ girls just give me an instant boner. Kora, certain Vixen designs, Kida, Storm. Not all of them. And I usually just jerk it to big tiddy brunette MILFs like Ava Addams. The times I jerk it to the aforementioned are even less than the times I jerk it to gingers. It’s just that there are a few animated/drawn ladies, that despite my actual tastes being different, still give me a diamond cock. I can just think of JLA Vixen, the name alone, and I instantly get an erection that can last as long as I need it to. If I think of a redhead, my mind goes to snuggling, marriage and other cheesy stuff, not hardcore fucking that can keep my dick up.
TL;DR Brains are weird.