Why do (some) men act as if having casual sex readily available to women is a privilege?

It really depends how casual "casual" is. In general, few women are entirely casual about sex, they do tend to invest emotionally in relationships far more than men. It is unlikely that many people with some emotional investment in a relationship will be happy about another person getting involved.

I would also suggest that it is very difficult to be fair in these circumatances. The existence of the other women is likely to lead to stresses in the relationship that did not previously exist.

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.