What does the change in the vampire really mean?

Vampires in past centuries were seen as scary, creepy, monsters who were a threat to society. Now it seems as if they have taken a complete change of character and have been accepted into a part of society today. Shows such as True Blood and Twilight have shown this. Vampires have become these majestic, attractive, sexual people with feelings. Does this change in the vampire reflect how our society has changed over time? Do the vampires that are resembled today bring out characteristics of how people act in mainstream society today?