I cannot see the downside for the Euro. After all who is more powerful as an economic entity: Wal-Mart or a local Mom and Pop store? They primarily do the same thing: sell stuff. However Wal-Mart due to it's size has much more economic muscle behind it. Europe with one currency, much like the U.S., re-creates itself as a major, economicaly diverse, powerhouse. For example: California could be an economically viable entity in the world by itself, however that is nothing compared to the power California has as a part of the U.S.. I don't really understand the skepicism. Most of the arguments against it simply don't hold water.