Wouldn't you think that if any nation understood the wisdom in bailing out your economic neighbors, regardless of what had happened to create the financial crisis, it would be Germany? What am I missing here?
well, in the case of the Marshall Plan there was not much political resistance here to the spending because we knew that in the aftermath of WWII, there was a real risk of Western Europe falling to the communists if their economies tanked and unemployment stayed high.
you had a couple issues there: left wing groups were typically anti-fascist, and the more extreme ones were communist themselves, and often receiving some support from the USSR. having just beat Hitler & Mussolini, they were poised to take power.
another was simply the fact that post-war economies were in ruins; as we've seen, extreme conditions force people to take extreme political stances.
so, dumping spending on them (and also in turn creating markets for American manufactures...) was universally acceptable. No way the USSR could keep up with American aid, and even if certain countries were pre-disposed to the USSR instead of the US, it's hard to say no to big fat American dollars.
in Europe's present case, it's a lot different. Ireland, Greece, Portugal, and to a lesser extent Spain and Italy had higher borrowing costs prior to entering the Euro-zone. Afterward, they could borrow at a lower rate than before, and they took advantage of this... the effect of overspending was most marked in the poorer of the countries (i.e. Ireland, Greece).
SO... obviously it's tougher to justify a bailout there. esp. in light of the prevailing "wisdom" that in the face of deficits brought on by tax cuts and depressed economies you should cut spending further...
so Germany is stuck between a rock and a hard place: in order to push through a bailout which would be politically unpopular at home, they need to demand any bailed out countries accept harsh austerity... but the smart money behind the scenes realizes that austerity will only make things worse, making it even more unlikely that the bailout will succeed or ever be repaid.