TL;DR - the European bail out of greek debt is really a public bail out of the private banks -- Deutschebank, Goldman Sachs, etc. -- who made the stupidly risky bets in the first place. DB and GS are getting face value* for their worthless greek bonds, and the taxpayers are left on the hook.
But good luck getting that side of the story ever told in the media. DB and GS shareholders need their profits.
* There was a haircut by the private debt holders at one point in time, but interest on that debt has basically made up for it. It was still a profitable investment.
(Lesson for anyone aspiring for a profitable career in international finance: find the weakest member of an organization like the Eurozone, and offer them as much debt as you can get them to take. It will have stupidly high interest rates (e.g. >7%) because it will be so risky. But importantly, make sure that you take on so much debt that a default would ruin you. This is vitally important. Now wait for the inevitable to happen and your own government to bail you out because you are Too Big To Fail. Be sure to have a golden parachute in place in case a socialist is in power when it happens, but don't worry at worst you might lose one year's bonus. You will never go to jail.)