Each missile purchased puts food on the table for a defense contractor living in Chantilly, VA. (The military industrial complex welfare state is very lucrative as long as you keep your mouth shut, your head down, and obey)
Which is always a stupid take. America is absurdly wealthy. We could burn half a trillion dollars a year in a big bonfire and still easily afford all the niceties of a modern nation like good infrastructure and healthcare.
We might have to actually tax a proportional amount from ultrarich and megacorps, but I'm perfectly fine with the people receiving 70% of all increase in wealth since the 50s paying a significant amount of tax.
Who did? The worst roads in America are all (meant to be) maintained with local/state money. The road surface of the federal highways are all in a reasonable state, although many bridges are sketchy. The F-35 isn't the reason an average country road in America looks like the surface of the Moon.
