I know many people who read m/m romance have a turn off button when the vagina gets page time.
(Full Disclosure: I was one of them)
Somehow I was disconnected from my own body and my ick factor reinforced the aversion until someone pointed out some of the most wonderful people I know have a vagina... and by the way no one's telling me to lick one. I'm striving for a healthy opinion of my own body and the female body in general.
So Pretty ones who care about orgasming... better self-esteem increases pleasure and the ability to orgasm. Psst, you're worth it.