I know that vampires are not real. But even the vampires in folklore are as a rule more dangerous and dark than your typical Twilight vampire. And since Twilight, you seldom find anything else but those whiny wannabe vampires. ANd Astarion fits right into that.
How vampires were imagined in folklore was very regional; not all were "evil terrible blood drinkers" and some had little to do with what you describe. Some would in this modern times probably considered more dark comedy than horror. Just because Western media likes to reuse the same trope, doesn't make this trope neither more original, nor more "real".
