It went to Germany. But you can't hold them responsible for this mess. Germany is a export based country, they are also more productive than the Greeks. They have managed their money well.
The only thing is that the Euro facilitated such things more easily.
But Germany can't be blamed for it. Imagine you go to a supermarket and buy like crazy. You know you don't have a way of paying it back, but you keep buying. Soon you run out of your credit limit of buying more. Soon you are in a situation where you owe the bank a lot of money and have no money of retuning it back.
Who is to be blamed, can you blame the supermarket for selling stuff? Or the bank for lending you money? Or you for not knowing when to stop?
Personally, I would give the majority of the blame to the banks (say 60%) and the rest to the borrower. The reason for this is that, in my experience, banks have got a lot less careful about who they lend money to (at least when it comes to personal lending).
The last numbers I read for Greece's imports from Germany were very small, in the low one-digit range. So I am not sure this is valid to say "it went to Germany" although at the beginning of the crisis this was a picture the Greek newspapers were all too happy to paint: the wealthy, greedy Germans who got fat and rich off of all those Greeks buying so much from them...
They spent the money.
It's no difference to running up a big credit card debt, but at some point you have to pay it back.
What went wrong for Greece was it maxed out it's government credit card and none of the banks would let them up their credit limit.
Now the goverment doesn't have a lot of money comming in but it still has a massive debt.
That debt has to be payed back or else they have to default (i.e. go bankrupt).