Well at the risk of keeping this old thread on top which in turn causes the corruption of innocent minds(and possibly the loss of heterosexuality) I just wanted to share some thoughts to the OP's,
moyoyi, question.
Oh yeah but first, if it's alright with moyoyi, this should probably be moved to the hentai section.
Being the lowly, pathetic, H-otaku that I'am(which obviously means I'm a dude). I've occasionally asked this question to a lot of girls(some reacted with violent intentions). And the answers were:
yes, some of them do, and yes they are not otakus although they do have a geeky side(everyone has some geekiness in them).
Even though it's embarrasing, I still carried on the coversation(I didn't bring up any odd/extreme fetishes like: homo, tentacle, excrements, etc) and asked them why they like hentai(videos, games, mangas, etc). They said they the enjoyed unexpected romance development between the couple(not just some one-sided or short-lived affair), and most of them said that even though some settings were surreal and fictitious, some were highly plausible, and it's that small ray of hope of achieving their fantasies that turns them on. Artwork's also a major factor(they're picky, but not as demanding as me), which includes women with realistic proportions and guys with sensible tastes and who show that they really do care for the girl(dammit, what about the guy's realistic proportions?!?).
So the answer to your second question is
no, it's not strange for women to like(and enjoy) hentai. And with the risk of sounding like a therapist: just keep everything in moderation.
I also wanted to point out that at the first few pages of this thread, that some guy apparetly likes using sex stimulants to their girl. All I can say is that unless you want to be his pet rather than his lover, you'd best avoid those stuff. No offence to those guys who likes to use it on their girl, but really, with enough exercise(healthy living and all that) and practice you'll eventually last as long as her.
Slightly off-topic:
When a girl watches yuri/lez porn, I can't help but think she might leave me for some cute girl and probably undergo sex change surgeries.
Likewise when a girl watches yaoi/gay porn, I can't help but think that she might actually be a shemale.
Those and along with other extreme fetishes and I'm: