I'll repost my reply to a similar question:

"They were Pagan (or at least the leadership were) and were, from what I've heard, incredibly elitist, leading to the Wehrmacht not liking them, which caused problems at the end of the war.

They also perfectly exemplify the fractured and rather incohesive nature of Germany's top echelon of leadership. Too much rivalry and juvenile behavior for such momentous men to be partaking in, especially since their mission was so important. "

I think this sums it up quite well.