There is a great email on the BBC site that sums it up perfectly:
It amazes me that we are held as the "bad apple" of Europe. This crisis came about because the single currency was a flawed idea from the outset, (without centralised fiscal policy how can you have a single currency) and that is the reason UK didn't join. Now once the plot unfolds and these arguments are proven we are asked to contribute to a rescue of the EU and, by doing so cutting our own throats.