I love sleeping naked. I do it all summer. In the winter, I wear a t-shirt because my shoulders tend to get cold when they stick out of the covers.
I can’t imagine what is unsanitary about it.
I would much prefer it if my partner also slept naked, but she doesn’t. That tends to put a damper on nighttime activities. I know women who have slept nude to indicate an interest, but otherwise sleep in pajamas. Sad, sad, sad.
In another life, I’d love a woman who sleeps naked all the time. We would get along just fine!