Consider that most (straight) guys are terribly excited about the idea of a blowjob from a woman, but disgusted by the idea of one from another guy, even though, if they kept their eyes closed the whole time, they wouldn't know the difference (unless the male blower had done it more and was therefore markedly more skillful).

The idea of a relationship with a woman who would do whatever I told her, without question or complaint, is exciting to me for about as long as I can avoid the question of how I'd deal with the responsibility involved.

Peter.