Why the fuck would i want to fuck a human like a cat?

I genuinely don't understand it. Yes the catgirls exist in a sexual nature, yes they're literally designed to sell you on the idea that they're cute. The cute is for the sake of character personality. But why the fuck would you want to fuck them like a cat? Why does that sell to people? I mean what the fuck is going through the minds of these people? I genuinely want to know what they're thinking.