The general consensus on this issue is he left it to challenge our faith. I must say I would agree with this. It seems like the only logical explanation, if God is real of course.
If you aren't claiming to be smarter than those who believe then how can you even be sure the problem is evidence. In my experience it rarely is. You know the old morals stuff...I have Perversion X and I'm not giving it up and oh -- by the way -- I am not a Christian (and they happen to be against Perversion X).
Or I know Jesus said to pray, but I refuse to until I know I should listen to Him (and then you wonder, Why not just pray and see?). I am a convert. The only intellectual issues I had was trying to understand what was really being claimed about God, versus what I had always assumed was being claimed.
But if I were you, the first thing I would doubt is that it is a solely intellectual problem.
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.