The eurozone's woes are giving us a preview of what could eventually happen in the United States (but not before Europe is engulfed first). As fears of sovereign debt crisis mount, the debt "contagion" spreads. It is not just Greece that has investors afraid, but Portugal. And Spain… and Italy… and so on.
The problem is classic, and long ago highlighted by Austrian economics. Building up a lot of debt, to make a slightly crass analogy, is like putting on a bunch of weight. It's hard work getting the debt off – the same as it is taking weight off.
The way to lose weight is to eat right and exercise. The way to get out of debt is to cut back on spending and increase productivity.