Greece problem is that it always have had had budget deficit. It seams they always voted for the party who promised the most to the people. A country cant be sustainible if it always have budget deficit, but why the greeks always voted for budget deficit is beyond me.
I think Winston said it best
“Democracy is the worst form of government, except for all the others.”
“The best argument against democracy is a five minute conversation with the average voter.”
So many seem to think Greece is already at the bottom and things can't get worse, should they not find a deal with the EU they will find out how very wrong they are. long term a grexit would be good for them, but short term (many years) they will experience a lot of what 3rd countries suffer every day where even essential items become a luxury.