In gay voyeur porn, it is about watching a hot guy touch himself or strip-or two gays touching each other. Humans are creatures that can get horny at the sight of sexual innuendo, so it is not shocking that people of different races and genders watch porn to relieve themselves of arousal. Porn, in general, is a form of voyeurism-the very act of getting off to the images of someone getting fucked of fucking is by itself voyeur. Porn thrives on the visuals and scenarios that incite horniness and make you feel aroused upon seeing.
The thing about porn is that it is solely about the visuals of it all-of course, porn cannot directly and physically touch you and make you feel pleasure.