I love vampires, but you know what really annoys me about them?

Hm, I was pretty sure that my vampires' hygine is decreasing rather normally. But then again, I haven't played with them in a while so maybe I'm remembering it wrong. I agree on the energy though, even though I wouldn't call it annoying, maybe rather weird. They could get tired slower than the mortals, of course, but some enegry lost would be nice addition.