I don't know if the Twilight books really are a bad influence. Teens today are pretty aware of implied meanings, even if they don't know what the heck you mean by "author's intent" or "inference" or even "theme." However, in her wildly-popular series, Meyer does present ideas that I object to as normal and even acceptable.
First off, let's brush past the minor quibbles:
You know it's True Love because you can FEEL it. *eyeroll* Wot evar. Of course it's not like every love is the same, but it's certainly easy for all sorts of other stuff to masquerade as Tee Ell Eff. Meyer isn't alone in this one, either, and I don't know if that makes it less annoying or even worse.
Look, I am about as cynical as they come as far as Le Romance, and I fell for this one. The little sister of my first serious boyfriend (a month? six weeks?) asked me how you know if it's really love and I actually told her - no joke, this is word for word (I remember because it's haunted me ever since) - "You just... know."
Gag me with a fork. Gag me with a fork with sharpened tines. PLEASE.
Wealth & materialism. I think a lot of books aimed at women do this these days; it's like if the authors drop in a few brand names, they don't have to DESCRIBE things. *eyeroll*
Now for the more serious matters...
Near the top: Idiocy as some sort of virtue. Doing stupid stuff because you supposedly can't think straight because your mind is focused on how OMG IN WUV U R!!1! is not a good thing. This doesn't mean that being in love is bad, or that passionate love is bad, just that being a moron should not be presented as a good thing.
Near the top, and related to the above: Paternalistic condescension. Apparently, girls who are in love should not be trusted to make their own decisions; they need someone to make decisions for them "for their own good." Learned helplessness has been spoon-fed to females for generations as some sort of laudable lifestyle choice, so Meyer isn't solely to blame, but it's not a good thing, either. What's even worse is that Bella apparently can't be trusted to make her own decisions, thus reinforcing the 'correctness' of the idea that every girl needs to be taken care of by a Real Man.
Related, and probably the one that's most important overall: Doubletalk, AKA "Passive-Aggressive BS". Bella is able to act as sexually aggressively as she likes, because Edward won't let things go too far. More than one girl I've talked to has said "he loves her too much to take advantage of her!" News flash, ladies: if you are making out with a guy, telling him how much you want him, and you think he's supposed to want you, yet say no to sex, YOU are taking advantage of HIM! Especially if you don't TELL HIM THIS.
Real life DOES NOT WORK THIS WAY. Ladies, remember: Edward is NOT HUMAN, and this (not the sparkly skin or unusual diet) is the clearest evidence of that!
Like it or not, because of the different biological and social consequences of sex for women and men, it is women who are the gatekeepers to sex. And until/unless there are drastic changes in our culture, it's likely to stay that way. I find this ironic, because physiology would suggest the exact opposite.
Drumroll...
Topping the list: Bella's treatment of Jacob. Maybe she can't help how she FEELS, but she has complete control over how she ACTS. Srsly! We DO NOT need another story with vapid female characters who are ruled entirely by their emotions and are incapable of acting with any sense because of HOW THEY FEEL.
Image thanks to http://flickr.com/photos/boopsiedaisy/843648479
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