, I find your comment offensive.
Are you aware that I can have the same reaction?
You have a severe lack of imagination and you dont see beyond your nose... You are so stuck on how the world is that you forget about how the world should be...
How can you advance if you have no idea about where to go?
Mankind is suffering from an illness, and this illness is war. It's just a higher level of crime. To have a war, we need a criminal attacking another human being.
And we evolved on this path. And the fruit of this evolution is all these heavy killing machines... Tanks, aircraft etc... We didnt build this crap to love each others. But to kill other people.
Cavemen throwing rocks at each others are more advanced than modern men killing each others with tanks.
At least, when you spend to train men, you get better men, stronger, more capable etc... It's not wasted resources.