The U.S. accounts for 35% of the world's defence spending, more than twice that of Russia and China together.
I sleep well at night because of a roofer who risked his life to fix a hole, not because the US spend an obscene amount of money on its military.
P.S the military isn't that dangerous. The largest killer is suicide, then transport accidents, then other accidents. Truckers are in a far more risky job, because of the danger of driving, and because of the sedantary lifestyle. Next time you see a trucker at the gas station remember to applaud him and thank him for his service.
The kid fixing broken windows does good too, but isn't exactly risking their life and limb in such an explicit manner as the way a member of the armed forces may.