Sounds like he's no longer serious about a family. After all, he didn't marry you and he seems to have not made a home for you and his children. It's one thing to make a choice, it's another to get help for the problem.
It sounds like he never got help for it. I suggest you let him go until he get treatment and changes his life. Otherwise, this will continue.
Seek counseling for yourself or go to AA for support for yourself.
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.