I think it shows quite a disconnect on your behalf to call it ‘war games’, it’s real people out there dying as you write this comment. A country sticking its head in the ground ignoring this to focus on internal matters is not a solid long term strategy.
Also NATO is not some kind of puppet Germany can use however it sees fit. It’s a group, where each member has its own interests and views and one day they might diverge from Germany’s.
While all the things you mentioned are very much needed, so is the power that ensures their security.