I think this is one of those Gay Men's Advice to a Straight Woman things... I have a woman friend and the more we talked about it, the more i think she started to let herself enjoy giving blow jobs. there's a lot of negative ideas out there still about women being a 'slut' if they enjoy any kind of sex and I think they can get caught up in it... even in this day and time.
You certainly don't have to enjoy it. and if you don't, you shouldn't do it. Just make sure that if you think you don't like it, it's for the right reasons, not ones that are imposed on you by society... in that way, I see gay men and straight women as kin... there is so many social norms that come in to play