The US uses war to export its domestic issues abroad. War is the primary conduit and excuse for corporate welfare.

Some of this goes into jobs. Occasionally - exceptionally, and less often than most people realise - some of it spins off into useful civilian tech.

But most of it is just free money for nothing much to not very nice people. Some of whom use it to buy political influence. And some of whom use existing political influence to make sure they benefit from it personally.

It's a perfect circle of corruption and moral decay built on foundations of death and terror.