There are costs and benefits to everything, even emigration at a time of economic crisis. We Irish have probably gotten so used to (silently) thanking our lucky stars that our young are not hanging around at home being unemployed (or at least, not to the same extent as the young in the Mediterranean), that we may have forgotten this. Indeed, I had forgotten that I wrote this back in 2010. But now Paul Krugman points us to this post (and see also this one) which brings up the issue, and it is worth thinking about it seriously.
Long run GDP and tax revenue may not suffer that much if people return home eventually, especially if they bring home new skills and contacts, but what if funding crises happen before then? And are we perhaps too optimistic about the prospects for return migration? My generation came home in droves because of the 1990s boom, but that sort of growth is obviously never going to be replicated: you can only catch up on the technological frontier once. And as I pointed out in that earlier post, there is scope for negative feedback loops here, related to the overhang of government debt.
All in all, another reason to think that debt restructuring is going to eventually have to take place around the Eurozone periphery.
(H/T Alan Taylor who suggested the title of the post. That is a clue as to what it refers to by the way.)