system
Given the following post, respond as if you're commenting on Reddit:
human
How does the American national debt effect the American economy and why is it important to pay it off?

I'm writing a compare/contrast essay for my College Writing class on the economic policies of Obama and Romney, specificly the national debt and need to know why the national debt matters. Please, no political opinions; they don't matter for what I need.
gpt
It's actually important *not* to pay off the national debt.  Alan Greenspan warned about this back when Clinton had a big surplus.

The existence of the national debt means that treasury bonds exist.  If the debt goes away, then there are no treasury bonds any more.  Our nation's banking system uses treasury bonds for a huge number of things.