Either you've completely skipped reading my comment, or you're deliberately trying to turn this back into your original point of "why would you want to watch Nazis win". So one more comment, and if I get the same argument again, I'm gone.

The second world war was an incredibly bloody conflict, can't you imagine that there were better ways to insert the US army into the war than D Day landings? Ways which would significantly decrease the losses? How many lives could have been saved if X country decided to respond to the Nazi threat earlier? How early could the war end if every allied country acted optimally with the power of hindsight?

Or what's the smallest change to Germany's pre-war politics needed to completely avoid the war? And what could Europe look like in that case? Or how about the smallest political change that would at least prevent any genocide? The game isn't just about the military part of the war.

This is a history sandbox. If that doesn't sound interesting to you, then yeah, this game isn't for you (just like it isn't for me) and there's nothing wrong with that. But it shouldn't be that hard to understand why it's entertaining for others, especially if you look at the amount of other media dealing with what if scenarios around WW2.