Backpacking in the winter I still do, but I think this is my last year of it. Set up camp in the light, pull out the REI camp stool and sit. Listen. Be quiet and munch a bit of food before sleep time. I absolutely love the peace and quiet. I don't sit for long in sub freezing temps, especially when it gets down below 28F. I have a headlamp, but don't use it that much. Inside the tent I will stay out of the sleeping bag until ready to fall asleep I do the same on bike tours in the summer, except I use a quilt.
Incidentally, I only use two Nemo Switchback foam pads in the winter for ground insulation, and only an air mattress in the summer.