Children and animals are not capable of providing consent. That's that.

I'm starting to get into BDSM, at least I'm curious about it, I think it's finding what you're comfortable with. One person can find wearing a clown costume can be arousing and the other person would have a panic attack if they tried it. There are certain things I would never ever do, and there are people who would love doing the things I wouldn't want to do. Obviously, I would not want to hook up with someone who's into what I am not. It's the same as vanilla relationships, you have to be compatable and consentual in order for it to work.