That's because the government's deficit is the people's surplus, by simple accounting identity. Paying off the debt would be catastrophic. Andrew Jackson did it, and 1 year later we had a financial crisis. Clinton gave us a surplus, which led to a financial crisis. It's very simple: either the government is in debt to the people, or the people are in debt to the governmet. The latter is a perverse situation.

Please read about Modern Money Theory. https://www.youtube.com/watch?v=TDL4c8fMODk https://www.nytimes.com/2017/10/05/opinion/deficit-tax-cuts-...