People having sex looks like dogs mating. How are people not disgusted by that?

I can’t understand how two people get so excited to have sex it looks disgusting, like two dogs mating. Literally disgusting. I don’t even know if something is wrong with me, but it just looks gross. Today I saw a post on teddit of a couple caught doing it at work. Literally so disgusting, like two animals mating… how do people voluntarily do that? I'm asexual, and I can't understand why people do it. It looks fucking gross.