I don't think that there are good guys and bad guys. I think that's a very childish way of looking at the world.

That said, I think you are both right and wrong. I don't think Hitler had bad intentions, and I also agree that going with his desires probably would have lead to him being much more or a benevolent, perhaps even humanitarian leader.

But that's actually a LOT of what if's that were never going to happen.

Hitler was wrong about a LOT of things and he doubled down on them when confronted. That's the problem. It's self-righteousness. It almost always is. The worst atrocities in human history are almost always committed by people who are convinced they are on the side of righteousness and doing a greater good. That's how the atrocities become justified to their psyche. That's how they can avoid questioning or challenging their beliefs. There is no "too far" when the end goal is righteous.

This is the same problem with religion based atrocities. 9/11, the Spanish Inquisition, the Crusades all done for a righteous cause.