Orthopedists are the highest paid MDs per the AMA, but almost no MD makes enormous amounts of $, and the road is long and difficult and you work very hard for that income. Most people would not categorize medicine as "fun" either.
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.