Our military spending is enormous, but it's dwarfed by what we spend on healthcare. The problem with our healthcare system isn't that we have a military, it's the gross and intentional profit-seeking behavior of insurers and many others in the system. They see the government as a bottomless pit of money that they can tap with lobbying, and the result is that we pay stupid prices for absolutely everything, on the assumption that it will be negotiated down somewhat by private or public insurance.

If you look at how $1 of public spending on healthcare is used in the US vs countries with better healthcare, it becomes obvious where the problem is, and it isn't in the ocean. An anti-military ideological stance is one thing, but you don't need to inject it into this.