why would the $ have to bust in order to change currency. with markets being global it actually makes more sense to have a global currency that everyone uses. i think the euro really helped a lot of countries. it simplifies a lot of buying and selling. when i was in greece and turkey before the euro it was a major hassle to buy something. everyone was walking around with a calculator and if you used a credit card they would charge you an exchange fee on the card and you really didn't know what it would be until you got the bill.