I second (third? fourth?) the vote to check it out from the library and give it a try.

I actually stumbled upon the first book the week it was released, was drawn to the cover, read the back blurb, and bought it on impulse without having heard *anything* about it. I *loved* it. I stayed up all night reading, unable to put it down. I told all my writer friends to read it--even ones who swore they hated vampire books--and they loved it. My mom loved it. My sister loved it. My non-writer best friend (a vet, who'd never read a YA book before) loved it. My friend who went to Harvard and Columbia law, a partner at a huge law firm, loved it. Her mother-in-law, in her 60's, loved it. You get the picture! Keep in mind, this was before the second book even hit the shelves.
It went downhill after that. I liked the subsequent books *much* less (didn't like New Moon at all, Eclipse was okay, and Breaking Dawn, for me, was a complete disaster), but I still love the original one. Once the book got SO huge and the criticisms started, I admit, I can understand some of the criticism--I see what they're pointing out, and I get it....but somehow it doesn't make me enjoy the story/characters any less.
But I do think it's hard to go into a series *after* it's become as hugely big as Twilight is. You can't help but bring baggage and expectations into the read (as in, "THIS is the book everyone's going crazy over?!).
Even if it's not to your taste, though, I do think there's some value in reading it, just to pick apart exactly what it is that's made it so incredibly popular (and not just for teens, but as a cross-over for adults). I definitely have spent a lot of time doing exactly that. But do yourself a favor--stop reading before the final book!