If, by sin, you mean a violation of a moral code of a set of rules set by a major (or minor) religion, then no, not at all (unless, in certain religions, you are married).
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.