Twilight could've been a good story. Admittedly, I was intrigued at first. But the concept is terrible (sparkling vegetarian vampires and werewolves who change when they're mad (lol, U MAD, JACUB?) and the biggest Mary Sue ever). Terribly written, terribly executed, just plain BAD when compared with something like Harry Potter, which isn't itself high literature, but the concept was original and it worked, the books appeal to a wide audience, and they're reasonably well written.
The Twihards, though...good lord. The day my friend said she found her 'Edward Cullen' was the day I lost faith in humanity. GOD DAMN IT, YOU'RE SUPPOSED TO FIND YOUR MR. DARCY.