What are your guys’ thoughts on using a sheet between you and your comforter?

I like it. A sheet conforms more to one’s body than a comforter, so it can keep one from having a gap that allows cold air to come under the comforter around one’s neck. So it is warmer. Also, you don’t have to wash your comforter cover as often that way, as the sheet is what is touching you, not it.