Earlier quoted context omitted.
It was certainly very convenient for the germans to have some takers for their cheap bonds, but the fact remains that nobody forced the peripheral countries to live beyond their means and to refrain from implementing necessary reforms.
Nor did anyone force countries like Germany to share a common currency with them. I've never really gotten why one country would want to share only a currency with another country, while leaving their social and economic policies independent. But now that that's happened, the combination gets to stand or fall as a whole.
Of course Italians and Spaniards don't have any desire to become Germans, and vice-versa. The currency part was easy - the "harmonization" part will take generations if it happens at all.