My Bedroom, My Rules.
I live in a house of 6 people. I sleep naked regardless. I am comfortable in my body and if they walk in and find my sprawled naked on my bed then that's their own problem for not knocking first. Though they have now learned to ALWAYS knock before coming in because I actually like being naked regardless of whether I'm in bed or not... If my room is warm enough, I'll ***** down the moment I close my door, usually only to my underwear, but the point remains. My family have learnt to expect bare skin if they dare enter without permission XD