why must we suffer stupid threads like this?
For better or worse stupid is covered under freedom of speech.
When your taxes pay for the Hoover Dam and the Interstate System, than there is a significant multiplier effect. So you need to distinguish between paying for the advanced industrial infrastructure that commerce
needs versus other forms of spending.
Or what about the postwar years when massive government spending on the war time economy ended the depression. We could have built the bombs and thrown them into the ocean, but the result would have been the same: more Americans were employed and those Americans had massive new sums of "spending money", which provided an incentive to the capitalist, who invested and created jobs to capture that demand.
Or what about the legal system required by capitalism to enforce contracts so that investors have the needed protection/predictability to put their money at risk. Your tax dollars pay for this. You should be able to give an in depth account of how dependent capital transactions are upon our considerable legal infrastructure. You need to turn off talk radio.
Our what about the global economy which makes sure our goods are safely shipped from places like Honduras or Vietnam. Capital investment would come to a halt if global supply chains were not protected and stabilized by the Pentagon. Guess what pays for this? Taxes.
Go back to school.