I stopped that argument with my GF by asking her to consider this. She NEEDS the seat but cannot seem to remember in the middle of the night.

I am supposed remember this while half asleep. Make my way to the BR, remember to be courteous for her sake and lift the lid. Accurately aim and fire. Then while still drowsy, I am supposed to remember the courteous but wholly unnecessary action for myself, of returning the lid to the supine position for her benefit. So who does she think must be superior?

That was a year or so ago and it has never been brought up again although I do TRY to put the seat down.