As a little kid I slept in pajamas, and gradually shifted to just tight whites into my teen years. After we got married I went to sleeping nude, and did that for years. But gradually my love for wearing plastic pants or other plastic garments next to my skin won out. My late wife was never much of a cuddler in bed, and I realized one night that I could probably wear my plastic panties all night without her knowing it. The first time I tried it I was all nervous about it and didn’t sleep that well, but I soon found out that the relaxing comfort I get from wearing plastic panties actually helped me to sleep better - it sounds like a MyPillow ad, but I fall asleep easier, sleep more soundly, and wake up feeling better if I’ve slept in plastic pants.
My wife hated this at first, but she knew how much it meant to me, and I actually think that less tossing and turning on my part helped her sleep better too. At any rate she finally accepted it, and for the last nine years of our marriage I always slept in plastic pants.
Now that I live alone I’ve found that on cooler nights I’d rather sleep in a plastic romper over my plastic pants instead of putting another blanket on the bed. This winter and spring here were cool enough that I slept in a romper every night from October through the middle of June. Now it’s warm enough for just plastic pants at night, and I hope we’ll have a warm enough summer that I can sleep in bikini-cut plastic panties, under just a sheet.
I’ll point out one advantage of sleeping in plastic pants; they move with me when I turn over in bed, slide easily against the sheets, and don’t tend to bind like woven garments will.