We can agree at the injustice of transferring money from moderate-income pensioners to wealthy bondholders. But I think the even more important question is what makes the average Joe better off. And it's not clear to me that "stiffing the creditors" is the right answer.
For starters, some of those creditors--maybe a lot of those creditors, depending on the country--are insurance companies and pension funds that serve the aforementioned Average Joes. But leave that aside. Europe is not, at least as I understand it, making the creditors whole because of their abiding love for foreign holders of European sovereign debt. They're stepping in and guaranteeing this debt in order to prevent a run on their banks and their bond markets.
Runs on financial markets, as far as I can tell, do not righteously limit their damage to rich jerks who didn't need the money anyway. In fact, the people who suffer the worst from a rapid contraction of the credit markets are the poor. They're the ones who actually end up hungry and on the street when companies start failing and they can't get jobs.
Now, perhaps you think that Iceland proves that default works. But I think that even the serious proponents of this idea recognize that this is a contested notion which is far from bulletproof. Ireland might be doing better now if they'd just told the bank creditors go go get stuffed. They also might be in much worse shape. We don't have a whole lot of data points here.
In the case of the current eurodeal, it seems to me that announcing that debtors are getting haircuts on their Italian or Spanish sovereign debt--or even failing to convincingly close off that possibility--would create the very outcome that they're trying to prevent: an all-out run on a bond market that is too big to save, and a follow-on collapse of banks that have bought too much Italian or Spanish debt.
Maybe this would be the best thing in the long run. But when I think about the histories of the Great Depression I've read, I have to say that it's certainly not obvious to me that making the creditors eat their losses is the safest and best options.
But even stipulating that it is, you can certainly see why the governments in question are frightened of the immediate consequences--and why they might try to stave them off, even at great expense.
Don't get me wrong--I think this is a pretty bad plan. But I'm not actually sure Europe has any obviously better plans left open to them.
This is why McArdle claimed that defaulting didn't help Argentina: Banks that make bad loans must always be made good. Moral hazard, like taxes, is for the little people.