because, like you and your reservations about men going down on you, everyone has preferences, likes and dislikes. I think maybe a lot of women feel pressured into doing it rather than learning to love it.Mmm, but I don't get why more women don't go down on men.
My partner was married before me and also in a long term relationship. Both of those guys (fucking idiots!) thought oral sex was dirty, both ways. That is probably what turned her off men going down on her - she's paranoid about being dirty or smelling down there. But it left her desperate to try giving a guy a blow job, and she found out she was good at it, and loved doing it.