I already gave my answer here and you responded as follows:
That is why you should not run deficits in times of prosperity, which George W Bush did in fact do, those are times when you should be paying down deficits. During weak economic times, that is when you run deficits, making deficits the primary concern during these periods is dumb. Yes, historically large deficits have ruined countries, but of course they were ruined by a variety of other things, such as the fact that they suffered through hyper-inflation, thinking they could just print money to get by. There is historical precedent, but we are nowhere near that at this time and the main issue should be getting people back to work and getting productivity up. Having pissing contests about the deficit right now is ridiculous.
That Bush’s spending binge was recklessly irresponsible, I’m entirely in agreement with and I imagine everyone else is too. However, pointing that out accomplishes nothing as far as solving the current federal debt problem.
As for the fact that when a country runs huge deficits, it’s usually hyperinflation that actually demolishes the economy, that’s true, but what causes hyperinflation? Huge deficits, that’s what. Right now our debt is about $15,760,000,000,000. As long as there are enough investors in the world willing to hold that debt, we’re home free. Nothing bad happens to the national economy as a result of the debt. But what happens when investors are no longer willing to hold the debt? We have to raise interest rates in order to entice them to hold it. Basic math tells us that for every percentage point interest rates go up, we’ll pay an additional $157,000,000,000 per year. Right now Spain pays interest rates above 6%. If our interest rates go that high, it will mean the government spending an additional trillion dollars per year on top of what we already pay. If we get into that sort of situation, the only possible way that government can respond is by severely inflating the currency.
So when will investors stop agreeing to hold our debt? No one knows. Macroeconomics is an inexact science. It could not happen for years, or it could start happening tomorrow. I think it’s foolish to just hold onto our lucky rabbit’s foot, knock on wood, and hope that investors remain happy holding our debt.
Remember this. Five years ago, folks in Greece thought that things were going swimmingly. Same with folks in Ireland and Spain. And Italy and Iceland and Portugal and Hungary and… There are no guarantees in world economics. Nations have been crushed by national debts much smaller, as a percentage of GDP, than ours.