What makes humiliation/degradation so hot?

I'd like to hear both perspectives. What makes it hot for the dom? What makes it hot for the sub?

I'm a super masochistic sub myself, but I don't fully understand why this gets me so horny. I was role-playing online recently and the way she did mean things to me just made me melt and turned my mind into mush. If this was in a different context, I think I'd be mad that I'm degraded and objectified, but somehow with the right context, it drives me crazy with pleasure.

I know this is r/gentlefemdom and not r/harshfemdom, but I wanted to learn from anyone's experience here. I'm sorry if this post doesn't comply with the rules. If people are annoyed by it, I'll promptly delete it right away.