Because the author of the tale decided so.
to drink blood! to drink blood!
Blood.
in sims life stories, you can turn sims into vampires, but they dont drink peoples blood. if you have a high relationship with another sim, then i think you can choose the option to "bite" them and then they will turn into a vampire
erm i do believe a vampire that doesnt drink blood is simply called a hungry vampire. A psy vamp or a psychic vampire draws from others energy and don't necessarily drink blood
Drink Blood
Blood
No they do not.
blood
A vampire likes to drink blood of humans and animals that's how it survives
If you're a vampire: Drink somebody's blood, then let them drink a little of yours.
No they drink blood to use it as their life force
vampire bats usually drink cow or monkey blood but if they drink a humans they will most commonly drink from the big toe.