What are you talking about???? LOL Germany after WW1?? In what way, shape or form does this compare to Germany after the first world war????
Osama was a symbol of hate, and thus was also the most hated man on earth. Bringing him down was the archetypal act of good beating evil. People can say there is no such thing as Justice, there is only Punishment but that is mere semantics. He was the architect of 9/11 thus killing him is the ultimate act of avenging those who died that day. If that's not Justice I don't know what is.
Of course it wont bring anyone back from the dead, but ask the families of the people that died that day if this isn't a glorious news to them?