I totally agree. Prudent governments don't allow banks to lend huge amounts of money to dubious states that are in a bubble. Prudent states don't ask poor people to pay private debt that was made public by corrupt governments.

As for your question. If Greece leaves the Euro then it is the end of the euro zone. When Florida was going to default the federal reserve paid for them. That way people has confidence in the dollar. If when a European country is going to default every body screams and runs people knows that they shouldn't have any confidence.