Exactly.
My fiancée and I don't live together yet (got to sell one of our places first), but spend the night at eachothers place a lot.
I'm a cuddler, so that doesn't bother me at all. We are both semi-night owls, so no biggie. I can't imagine her ever bitching at me for not going to bed at the same time, but that has never been an issue. Usually we fall asleep on the couch together anyway.
I don't think I could handle marrying a woman that bitched all the time. Hell, mine RARELY does, and usually has good reason to if she does.