Why are hookers so often lesbians?

Seriously, why are so many girls in this business seriously into girls. I get hit on by other hookers so much, and I don't get it. You fuck men for a living, so you must be somewhat into men. Is it that you fuck so many man it's nice to feel a different touch every once in a while? I guess, but I fuck older, usually out of shape men for work, so when I go out privately I find the cutest guys that I possibly can to get it on with, and get the sex that I want, and the pounding that I love. A chick can't pound me, she doesn't have a dick, a strap on is not the same thing.