Although I have found it annoying to realize the seat is up when I have blindly sat down it the middle of the night (I don't turn the light on because it hurts your eyes when you are half asleep! and by the time your eyes will get adjusted to it, you would be done already!) I have never found it a big enough problem to make it an issue between the man and me. I choose to pick my battles, I'd rather save my "nagging" for more important things!
And for the record I wash my hands it the dark as well, you know the positioning of the sink and soap and don't have to worry about it not being in the right spot!