Hmm...before Twilight there was... Pirates of the Caribbean; Alice's Adventures in Wonderland; Naruto; Disney classics... Actually, I'm still hooked on all of that. That's just how I am. When I find something I love, I love it to the fullest; or what's the point of loving it, you know? :D
But I find it interesting how many people have /never/ been so obsessed with anything in their life. And then along comes Twilight... Very interesting.
lol See, I know so many people like you, too. It's must be the Twilight Dazzle-effect: entrancing millions of various types of people all over the world.
Being so passionate about something makes things one-hundred times more exciting too, doesn't it? If you see something related to something you like you'll be like "Hey, cool. Look." But when you're passionate about it, you'll end up more like this: "OMG!!! -insert uncharacteristic squeal of delight-" Even if it's just in your head, even if it sounds nothing like you at all, that's how you'll be. xD I think it's a fun feeling.