Greece is going to default and the European Union is going to either have to use force to keep it's member nations from disbanding or else fall apart into bickering cells of what were once homogeneous nations, now nests of alienated tourists with no common culture to bind them together through hard times.
Rather than blame the opportunists who put the European Union together, you should also consider the decadence of each of it's joiners, who basically sold their birthrights for a handful of magic beans. They had to be pretty sick and degenerate to even join the union to begin with. Each of the populations involved had surrendered their Christian faith, their patriotism, their respect for their mother and father, their respect for their ancestors. It is only these things that made the EU possible at all.