We spend 53 cents of every tax dollar on our military. Better ways to kill people to protect corporate access to foreign resources are always going to be a big seller here. We sell more weapons than any nation on earth. 
Hillary Clinton signed off on a record-setting $200 billion arms sale to the Saudi dictatorship. Moral? We doan need no steenking morals! All the better to destroy Yemen & control the approach to Suez and the Southern hemisphere. One more potential Iran ally down. 
This is about building empire. As LBJ's att'y gen'l Ramsey Clark said, "There is only one thing the rich want, & that is everything." Now, if the port can just find ways to make drone bodies from recycled carbon to use those cooling systems.... Locals are salivating over those jobs, no matter who has to die as a result. Love of money feeds all evil.
Arms are the only thing we build better than anyone else in the world, so war is always going to be popular here, no matter how many innocent lives it costs.