We did, long ago in fact. Just in a rather peculiar manner. WWII and the Holocaust have become our national mythos - it's our claim to fame, so to say, it's what sets us apart from other nations. Those five floors of guilt and shame are to Germany what the Star-Spangled Banner and the War of Independence are to the US.
You guys should save the Euro then have a new national myth about how you did something good instead of that crappy old national myth. It's not like the holocaust is unimportant but most countries are able to get the idea that racism is bad and genocide a no-no without needing to have a national myth about it. I dont think you guys are going to suddenly backslide if you dont teach it early enough.
They can have a national myth about how their governement is a terrible banker, Imho.
There is a joke that goes like this :
It's a wife and a husband that go to bed (let's call them dupond). The wife see her husband worried.
"Darling, what's happening? It's been three day that I see you struggle to sleep?"
"Well honey, I'm really worried, I've looked at our budget and there is no way we can pay back our debt to our neightboor, the village banker"
"Ok darling, don't worry".
She get up, goes open the windows and scream "Raffael? Ms Dupond here. We can't possibly pay back our debt".
She then come back to bed and say "see, now that's him that cannot sleep"
A banker that lend at a good rate to a reliable party is a good banker, but a banker that lend to an unsolvable one is an idiot no matter what. The fact that Germany let countries take so many loan it was tied to is a terrible lack of oversight.
It's also very important that peoples and entities can default, it avoid bankers being careless. In this case, the poeples that lended enough money to Italy to let them rack up a debt equal to Germany are idiots and should lose their money. Especially since it got funelled into "bunga bunga" Berlusconi's pockets