It's definitely mine and my slaves top shared fetish and we've talked about it plenty. It gives her a rush. ...and me. It makes her excited and horny. It can make her cum in minutes, while just plain sex without humiliation makes it hard for her to cum. I react in much the same way when I humiliate her. When a woman humiliates herself for me or just at all, it's great to me and I love it.

I don't really care about why. If it makes you horny....go for it. If not, then don't. Both of us have had this kink all our lives.