While there are many many things to take issue with in the OP's post, I would like to highlight one thing, the fallacy that "money" is some kind of commodity or resource, that we are at the whim of its appearance into our economy, and that we must fret about its use, etc. Money is the oil in the system, the lubricant. It's not timber, metal, water, people, machines, products, ad naseum, it's a social construct, a system, notation.
When I hear someone say we have a spending problem, my ears perk up, only to flatten once I hear that we are spending too much in general, or too much on healthcare or retirees or education. We do have a spending problem, but it's 90 degrees from what many think. If money is the lubricant, then the problem (or better yet puzzle) is what parts of our economy do when need to better lubricate? Right now, I see large parts of our economy dedicated to building great palaces, stadiums, yachts, dedicated to hurling sophisticated bombs at people far away, used to monitor and observe citizens and visitors.
Our spending problem, at least in my opinion, is that we've collectively bought into this idea that the ideal market is a blind market, and that any attempt to steer this ship away from some """natural""" course (can you tell I don't buy that anything in this realm is truly natural in any scientific cosmological sense) is foolish.
Damnit, someone is deciding where our collective efforts are being directed to, and the issue about spending problems and economic inequality is that some efforts do more to help us now and in the future than others. Bombing enemy combatants certainly provides some technological benefits, as well as direct pay to soldiers, engineers, factory workers. But maybe directly spending on research would give us more bang for our buck. Giant stadiums and glittering buildings look nice, but maybe if 90% of people made more, and 10% made less compared to the current situation, we'd see more job opportunities for those who have given up.
tl;dr: we need to break the illusion that money is a resource, and recognize that it's a tool, and one that we can wield for specific purposes, and right now, I believe our current politics prevents us from wielding it for the best use for the most people