What real-world problems do high debt/GDP ratios cause?
Isn't the whole point of stimulus to kick-start the denominator in the debt/GDP equation?
At any rate, governments don't need to "pay down debt" (which is kind of a strange thing to say, since the government is always paying off bonds.) They just need to grow the economy such that the debt is less substantial, which pretty much everyone has always done. I mean, the US wasn't going through times of tribulation paying off its 100%+/GDP debt after WWII, we just inflated it away.