Whenever either parent or child starts feeling uncomfortable about it. And unless your kids have been taught that the naked body is a shameful thing, they probably won't get uncomfortable for years to come. If YOU feel uncomfortable about nudity around your kids, by all means cover up.
Nothing wrong with that. But you'd be doing it for your sake, not theirs. There is nothing inherently harmful about non-sexual nudity around the home.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.