I think Camerons decision was right, but also unavoidable. The only things he had to worry about was a backlash from the coalition partners but then again, even they have more sense than to shout too loudly given current public opinion over Europe and the Euro.
The transaction tax that will be put in place would have hit the UK really hard, as most transactions pass through London and I suspect that a lot of the 17's MEPs would have expected Camerons decision.
After all, why should the UK bail out countries who signed up to a currency that the UK didn't agree with and didn't join?
Let Germ