There are some very fundamental flaws in your reasoning, mostly I guess due to the fact that you have a profound misconception of the German people and the way we (I'm German) think about the World Wars.
First of all, concerning the dark history of our military past, it's the other way round. It's mostly according to German people that our military history is considered a dark one, other nationalities doesn't seem to have as much problems with it, as can be seen by multiple calls for us to spent more money on the military, join this and that etc. (even from the British, who seem to consider it some kind of fun to remind us of our history all the time).
Our military past is full of wars and slaughter, Germany and it's predecessors (as most of western europe) have been settings for war and conflict for centuries, actually since the beginning of historical record. As I want to keep this short, I'll leave that aspect out of this.
You have to understand the following: After WW2, when the POWs returned to their destroyed cities, when the people suddenly realised what had happened in Nazi Germany and in the concentration and death camps and so on, the German people's very natural reaction was: This must not happen again. This did not have to be stuffed down their throats.
Soon after, mostly in the FRG the children of the war generation started to ask their parents how they could let this happen- "What have you done?" The result were the events of 1968 and the following years. Again, nobody had to stuff this down our throats, it came from within the young people.
From then until now, we're constantly working to understand our past and esp. what happened from 1933-45. Every few years, new aspects arise and are discussed. Every new book about Hitler or the German people during that period of time triggers new passionate discussions.
As time passes, the discussions become more and more factual and more ripe and seen with all cpability to differenciate one has to say: Yes, we had very, very dark chapters in our history, oftentimes involving the military. The fact that other nations have these as well doesn't make it better by a single inch.
This understanding did not have to be stuffed down our throats.
Interestingly your reasoning is used by those few right wing extremists we still have here with almost exactly the same words.
No. The time has come to fulfill our military obligations in the world together with our friends and allies in the EU and NATO. Nothing more.
I personally think that Russia is very bad example of how things can go if a former super power (Russia isn't one) tries to rise again.
I further hope that nationalism (as we understand it today) is something that has been overcome in the civilised world forever. I don't have anything against patriotism, though, and that's a whole different matter.
And, as I don't consider being a superpower is a cool thing by itself I too have to ask: what for? Why should we?
As a sidenote, I know that Germany has the economical and technological abilities to become one, however I think that Germany lacks the geographical footprint in the world...