And vampires aren't people - they are blood thirsty beasts without any feelings.
Actually, given that the player character can become a vampire and then get cured. Vampirism is more of a "condition" than an entire new race of sub-humans/beast.
In fact, vampires are rather harmless, given that they can only feed from sleeping people. So the most harm they actually do would be you waking up to find someone like this http://images2.fanpop.com/images/photos/4700000/Kate-Beckinsale-kate-beckinsale-4731743-1024-768.jpg kissing your neck. (you don't even lose health)
Of course, a female victim might find http://upload.wikimedia.org/wikipedia/en/7/73/Bat_Boy.PNG or http://1.bp.blogspot.com/-GMoFBbw7BA4/TybKZJKnaRI/AAAAAAAAASg/bo6VfGNlINE/s1600/edward.jpg , both equally as bad, in their room in the middle of the night. But we all know female homo sapients do not exist in the Internet, therefore there is no danger of this post been disagreed on.