I don't understand the big to do about sleeping nude especially from people who lock their doors. Exactly who will see you? Mom, Dad, Grandparents or your siblings. By now they know the difference between male and female. You are not standing naked on a street corner, in front of strangers.I sleep naked.
I mean i keep my door locked so its not really a big deal.
People have seemed to take a complete about face over the last 40 years. There were hippie communes where everyone was naked including men, women and kids of all ages.
I suggest that you have a MAJOR problem. Get help!