What does spending on military $600B/y get you? Capability of winning wars? America has not won a war since WW2. National security? Think about 9/11. Geopolitical influence? See the middle east mess. Economic wealth? Well if you invested a trillion per year in any sector of the economy you would have spurred economic activity of similar magnitude with the defense sector, that could actually have some benefits for the society, e.g. proper healthcare.