If the creditor is a bank, they're also creating money when they loan it out. Who is being robbed again?
In theory, it's either the shareholders, boldholders, or the broader citizenry that carry the risk in the banking system. So far Europe's governments have hung the risk on its citizens because either the banking system is too fragile to handle large defaults, or they want to preserve their bond holder and shareholder friends. probably a mix of both since they convinced €140b worth of bondholders to take a 50% haircut on Greece back in 2012. the hedge funds really were the main case of anyone getting "robbed" but that's what we call "credit risk".
The ECB can't handle Greece on its own because it has much stricter rules than a sovereign central bank would. It's bad financial architecture.
Per your last statement, there are MANY U.S. States, especially in the south, that have spent more than they earn at times during the financial crisis. I don't mean government spending, I mean taxes vs. transfers - wherein the Federal government is keeping the people in that state afloat. You don't read about those as much in the papers because we have a fiscal union and automatic stabilizers designed to help our neighbours out when they have problems. Europe lacks this.
Economics is not a morality play of evil debtors and angelic creditors or vice versa. Creditors can and should be wiped out when they make stupid loans. Debtors can and should be held to account but given forgiveness when they screw up (with limits on their ability and size of future screw ups). Failures to do either lead to systemic failures and/or revolutions. This has happened throughout history and will continue to happen regardless of your political system - monarchy, democracy, oligarchy, and anarchy.