Vamping it up in your library

A very amusing discussion broke out on the Bujold mailing list, after this gem from Marna Nightingale:

Ok, seriously, can somebody tell me what is up with the Vampires?

I mean, look. They undoubtedly have terrible breath, you'd have to give up garlic, a big church wedding is Right Out, and you really don't ever want to go on a holiday somewhere remote with one. And they don't help with the yardwork. Or the school run.

Presumably they don't mind getting up with the baby, assuming that
a) they have not eated it and
b) they're not out batting about biting the necks of other nubiles,

but surely that's not by itself enough to overcome their other shortcomings as life partners to the extent that my library's romance section has almost entirely taken over by pointy-toothed dudes in penguin suits, is it?