What's so great about the twilight series?

im one of those who thought i would see what all the fuss was about, and i really liked the twilight series, i think most of the people who read it like it so much because it really shows romance, i mean the author wrote these books because she thought she would have a teenage romance based on Romeo and Juliet, ecxept the boy this girl wants is forbidden, and i guess its the thrill of vampire romance, and action and one REALLY clumsy girl.