I do feel a bit sick of the moralist talk of "punishing" the Greek populace. The real problem is that euro system has been built in a manner, in which such "punishment" is the only enforcement mechanism, its only defense against disintegration. This is not a desirable feature of the eurozone architecture, but, rather, its main flaw.
Most (through some do) don't want to force this on the Greeks, but the Greek economy and government need reforms, and while it would be better for everybody that they was pushed through much much slower, no one expect the Greeks would keep any promises they make for reforms the moment they got the money. Remember this isn't the first time the Greeks is taken in massive mismanangement of their economy and conning the rest of EU, and everytime they have promised that they would make reforms, the moment they got the money, they ran from all those promises. As such the decision have been made to force all the medicin down Greece's throat, while it doesn't have a choice, and hope the patient survive the massive dose.