I'm not certain vampires should ever be written as romance stories myself, but that's just personal preference speaking I guess.
Science fiction, historical fiction, fantasy, memoirs - I think they count as their own genre. I read a fair amount of literary stuff too. I do read some horror, don't get me wrong, but some of the other genre's I'll pick up anything that looks interesting, whereas horror I tend to look at reviews more closely. But I'll read most any genre if the writing is solid.