Economists are false prophets of doom. Economists are great at studying economic events after they have happened. Economist future forecasts based on past trends do not take into account Black Swan Effect and other unexpected events.
The easiest way to get rid of inextinguishable debts is to simply abandon one currency and switch to another currency. It is about time the Euro is ditched in favour of nations having their own currencies. Germany is forced to subsidise the weaker nations in the European Union.