Do you believe it is possible that a woman who at one point had no problems performing oral sex might, later in life, decide it is disgusting and no longer be willing to do so?
If so, then is it not also possible that a man might at some point in life think nothing of having sex with anything he can stick his part into, but later in life realise that such acts are disgusting and no longer desire to do so?
Part of my difficulty here is I can't believe it would be possible to change the gender I am attracted to. I could decide to not be with a woman but I don't think I could change whether I am attracted to a pretty woman.