It might be greedy people at fault, but the Euro has aided them.

Ideally I'd not lock my front door, nor have passwords on my online banking, as only thieves are going to try to steal things. Well, seeing as how I live in the real world I have to factor in things to prevent events occurring.

Although the whole world living under one set of rules and one currency might be the utopia that some want, that does not mean it'd work. Saying the Euro would work if it were not for Europeans isn't much use.