Mr. Lind nailed it with the hammer of intelligent reasoning.

The US has poured it's largess from prosperity into full spectrum weapons of mass destruction, and has demanded obeisance, through threats, embargoes, and bombs from the rest of the world. That nail has been so hammered, that the military industrial complex is  profiting while the real economy is faltering, increasing debt, infrastructure crumbling, and health care is an expensive mess.
Hawaii is addicted to military money & Pearl Harbor brings tourists.
The #1 entertainment in this country is gratuitous violence, from movies to video games. Generations are brought up on this stimuli and they are psychologically trained to expect Uncle Sam to violently hammer any problems.
N. Korea - if bombed, S. Korea would suffer catastrophic losses. If S. Korea/US invaded the North, China and Russia would not accept the US to have THAAD on their borders.
Swinging Hammer will not solve N. Korean problem.
Do we have any other tools?