You know how vampires don't get any nutrition out of it if they drink their own blood, or each other's blood? And how they can feed on rats if they have to, but they don't like it? It's like that for righties. Lock them in a room with each other, they hate the taste of their own gross efflux, and start to starve.
Someone hasn't played Vampire: The Masquerade. Drinking other vamps is the fucking shit if they're closer to the First Vamp than you are.
Wow, this thread is a great reminder of the bigotry and ignorant, hysterical fear that was casually tossed around at Wordforge back in the day.