The same with me, although I wish my wife did also, only once in a while she does or if we are away in holidays together.
I've been sleeping naked for about 6 months now and I didn't know what I was missing. It took a couple of weeks to disassociate being nude with sex and while to me it's about comfort, it does make sex easier!
I always used to sleep naked but now, due to disability, this is impossible as my bed is now downstairs in the living room and there are 5 others in the house.
I enjoy sleeping naked. Don't much with kids now; but the wife and I enjoyed a few nights away in a hotel and I slept naked those nights. Was great. At home I just wear a pair of boxers but fully naked is nice