Understandable. Germany has experienced crushing, humiliating defeat not once, but twice in a hundred years, and the second time it was abundandtly clear that they were on the wrong side of history. No wonder the fightin' spirit hasn't recovered.
That said, when certain substances start hitting the fan, no one will ask you whether you want to fight. Read some WW2 memoirs: the shit was so horrific that even hardened patriots had serious second thoughts from time to time. I mean, imagine living in a trench for five years and watching your buddies die one by one. People get PTSD in as little as 6 months in conditions far less gruesome. Now imagine 10 times as much time in conditions that are easily 10x worse. It sometimes worries me that kids these days know nothing whatsoever about this. Those who don't know history are liable to repeat it.