1. It's a huge metaphor for conservative values -
There is a protagonist named Bella and a vampire named Edward. He really wants to drink her blood or something and so he can't get close to her because the temptation is just too much, and in the heat of the moment, it's really hard to stop. Teenage abstinence? Check. Then I read that in a later book, after the couple has married, Bella is carrying a demon child but won't abort and will probably die giving birth. Anti-abortion? Check. I guess the conservative crowd has started pushing it on girls at a young age. I would be a very disappointed mother if this is what my kids were reading.
2. The fans are psychotic - The guy who plays the vampire in this movie did some mall appearance or something and teenage girls with bleeding scratches on their neck would come up to him and say "Look, I did this for you." Oh, and there's this video.
3. It's just fucking ridiculous and gives girls the wrong idea about what love actually is causing many males and females of my generation to live in unhappy marriages.