I am attracted to controvercy & tabboo (I blame Japan, for making weird fetishes readily-available), but Twilight isn;t my cup of tea. Let's put it this way...I stopped reading Anne Rice's Vampire Chronicals when Rice got all religeous & stopped making her vampires gay. Of course, the less controversial "gay" is, the less interesting it becomes. I dunno, maybe if they were all somehow blood related or Bella was a guy...As for them being different species; well that's too commonplace. I grew up with Gargoyles, Ninja Turtles, Biker Mice, Beauty & the Beast, & X-Men.
I also think the series is a bad influene on young women, just like WAGs, only in different ways. Actually, the WAGs are worse; someday their men will dump them & they'll be living in cardboard boxes & turning tricks for euros.