Personally I don't think that asking a woman to perform oral sex is "degrading". I don't even think that assuming they will is degrading, on the other hand, neglecting their worth based solely on oral sex WOULD BE degrading.
If I am having sexual relations with my girlfriend, then performing oral sex certainly doesn't feel like I'm being humiliated or degraded(from my POV). On the other hand, if it were someone I wasn't really famliar with, we kinda hit it off and then she dropped her drawers and grabbed me by the ears saying "Alright you useless *******, eat my freaking crotch" I'd buy it, but otherwise it's just a sexual act being performed for the purpose of pleasing another phsyically and yourself mentally (and/or emotionally).
