Simple: For most people (not everyone) even the thought of it releases stupid happy drugs in brain. It suppresses the feeling of disgust very effectively. Free will my ass, we are chained to those brain chemicals.

Weirdly enough a lot of humans are very opinionated on who are allowed to think about who, even if the brain chemicals doesn’t give a shit. Its all a big mess really and earth would probably be better off if humans didn’t produce these chemicals.