We DON'T want the Euro to fold. For starters it'll almost certainly crash the world economy, at least a major recession maybe worse.
It was designed to force a political union from the start. Our fearless betters, um, leaders decided after ww2 that Europe needed integrating to stop the incessant and deadly wars. They thought if they could sell a monetary union a political union would be necessary to keep it, and that the economic benefits of the monetary union would convince people to agree to the political union. Who doesn't want a new Rome?
Seriously, a unified Europe is probably in Europes' best interest and certainly in ours. Greece has to come to grips with the fact TNSTAAFL no matter what the commies say. Or become a second world country or worse, it really is up to them.
Pete