This is idiotic, the value of the monetary union to nations like Greece is OBVIOUS but to other nations like ours or Sweden or Norway it's not because we have strong production values of our own and so we get to keep our own currency. For nations like Italy, Spain or Greece the value is a stable currency and for us all a stable Europe.
I think you missed the point of the EU entirely.
You are in a weak position to speak of 'idiotic' when you don't seem to understand the issue, or how the single currency works.
Germany needs a market for its exports, it has to run a trade surplus because it has long had the policy of keeping domestic workers wages low, and so keeping domestic consumption low, so its products have to go somewhere else. The Euro helps provide that. But the flipside is the weaker Eurozone countries have to run a trade deficit. But because they are in the Eurozone they can't devalue, and, crucially, the convergence criteria prevent them from running a fiscal deficit, so they end up trapped in a spiral of economic contraction. This is why those countries have _massive_ unemployment.
The way the Euro works is to strangle the weaker countries within it. It only works until the Eurozone economies diverge, when they do the trouble starts, because of the combination of a single currency without financial transfers between countries. Everyone pointed out this was a flaw in the idea when the Euro was first introduced (that countries with diverging economies would have different requirements for different currency strengths, so you'd have to either have different currencies or a fully unified superstate with financial transfers between regions), and sure enough, the critics were proved right in the subsequent crisis.
The UK has been acting as a safety-valve for that Eurozone unemployment, incidentally, hence the large influx of Greeks and Italians and Portugese to the UK recently to take advantage of our 'liberalised', low-employment-protection economy (which creates large numbers of insecure short-term jobs, but avoids the secure-insiders vs locked-out unemployed that is a feature of the Continental model).
It makes no sense to have fiscal union without full financial union (which means political union). At some point that is going to have to be addressed, but the Germans seem reluctant to accept it.
My gripe about the EU is the reverse of UKIP's - its political union doesn't go far enough, and unfortunately probably never will, precisely because of that UKIP-style reaction to it (itself probably an inevitable result of the failure to first build a single European 'people', and instead try and do everything from the top down). And as long as it's stuck in the middle ground, being neither a genuine superstate nor a collection of independent states, there are going to be all sorts of problems, that might eventually shake it to bits.