Mling has an excellent point... I think of the scene from "Big Love" where Nikki accuses Margene of degrading their husband Bill by allowing him to perform oral sex on her. Nikki firmly believed (believes) that such an act of a man on a woman is degrading to the man, and immasculating... Something that obviously Bill and Margene don't feel.
And there are a vareity of sex acts I've also heard labeled degrading, but I think of them (some of them having a home in our sexual routine) and I don't find them degrading in the slightest (even though I'm the supposed subject of the degredation). I'm a consenting adult, so if I consent to doing it, and enjoy it, how could I be degrading myself?
And as a former worker of the retail service industry, specifically the worker of a greenhouse, I really feel the statement of others about how that was more degrading than any sex act I've ever done with any partner I've ever had. Being treated like the icky, dirty, stupid, subserviant worker to a person spending $100 on a friggen tree just made me feel so... Vile. The best comment I heard was from a woman who found out my husband was a pilot... "Oh REALLY... Somebody like YOU could never be married to somebody like that. I mean, he's educated! What are you? You play in dirt all day."