So,That's precisely what happens in periods of distress. People pay the government to hold their money because it's the most liquid and safe place to be on the planet.
For someone who likes to refer to the bond market on a whole host of issues, you would really do well to learn more about it. I could suggest some reading for you, but you'd just reply with snark.
People have faith in government debt (even if that's not the first place they'd like to put their money).
When our investors buy bonds, one can truthfully say that "we owe ourselves the money".
Inflation is low.
You win on the rest.
