Edward. It would be impossible to discuss the obsession with Twilight without addressing the pivotal character of Edward. The obvious explanation for the obsession as that all these girls are in love with this boy--myself included. Why? Besides the danger aspect (bloodsucking, death, eternal condemnation, and so forth), the best reason I can come up with after many months of thinking about this is that he exists solely for the needs and desires of Bella (i.e. the reader). He is rarely preoccupied with his own problems, which you'd think, as he's a vampire, would be plentiful, and devotes himself entirely to her-exhibit A, he stays with her every night. Oh, and he loves her unconditionally.