some yaoi can be good (most stuff by kazuya minekura, or even that new anime junjyo romantica). and by some, i mean a minuscule few. most is just the same rehashed plot, over and over. but when you think about it, so is most porn.
and as a chick, i think a guy shouldn't write off a chick if she likes yaoi. its not the yaoi that's annoying, it's their frickin attitude about it that's make or break.
i dabble in yaoi, and it's simple: you watch/read about a couple dudes sticking something else up another dude's pooper, you have a good time and you move on. there's no need for he squeeing and the random japanese and the shitty makeup, etc etc etc
i never got the whole yaoi fangirl thing. i feel like some chicks just act that way because they feel like they have to.