If there was EVER a time to re-examine how addicted we are to spending enormous sums of money on things that go boom, surely it would be now.
Our historical foe is crippling itself, burning through its vast arsenal at an accelerating rate.
They will have to rebuild their military asset base, while under international sanctions. This will be enormously expensive, and will take a decade.
Whether or not it is "essential" is subjective, but a lot of our military spending has to do with maintaining ready capacity from the excess number of boots to keeping contractors in business so they are there if we need them. To me the strangest thing is about how much money we pay Booz Allen. Everyone I have known who worked there seemed to have jobs that involved having meetings about scheduling meetings and followup meetings to discuss the meetings about scheduling meetings. It all seems to be a bunch of pointless busy work for the most part to put in the required number of manpower hours the government contracted for, although I suspect there is actually a questionably legal intelligence community hiding in plain site underneath all those non-governmental paper pusher jobs.