I think just as many women prefer softer/straighter hair as men. Otherwise there wouldn't be so many of us fighting our hair for years trying to get it to be something it's not. And even when we 'embrace' our 'natural' hair, we are all still on a quest to get the softest, smoothest hair possible. It's just natural. I don't think there are many people who wouldn't kill to wake up with silky, smooth hair- curly or not. My ideal hair actually has nothing to do with how curly it is or how straight it is, I just want it to be soft and frizz free.
I think men love to run their hands through women's hair. Heck, I love it when my boyfriend does that! Can't say I blame them for that. I think that's why there is a perception that they like straight hair. It's not that they don't like the curls- most guys wouldn't like heavily sprayed and styled and product heavy straight hair either.