Just remember that one person's kink may not necessarily be anothers.
Just because you don't like it, doesn't mean someone out there does.
It's a fetish, a form of play, and a small part of D/s.
I play on the outer edges of humiliation, and have been taken to some very scary places.
Not everyone enjoys humiliation, but I thrive on it. It's my fetish.
I am a toilet slave, but will only go as far as being a piss slave, he respects my limits and would never cross a line that I wouldn't agree to being crossed.
My Master treats me badly, calls me very nasty names, he humiliates me in whatever way he can, but I will fully say that he respects me and cares for me very much.
It becomes abuse when the other person does not consent to this type of play.