As an American that has lived in Europe for nearly a decade now, I think you vastly underestimate the cultural differences between the two continents. I think the average middle class American would feel boxed in here, annoyed by the constant bureaucratic action required to get things done, and somewhat confused by the general lack of "can do" attitude.

Moving here requires the ability to be a kind of permanent outsider who nonetheless is reminded by the dominance of his culture on every corner. It's a strange feeling and not one that I think most people are prepared to deal with.

Edit, in case I was unclear: by "dominant," I mean that American culture is everywhere. McDonalds, Starbucks, Hollywood celebrities, Netflix shows, hamburgers, popular music, on and on. European youth culture is probably more influenced by American culture (via the Internet) than any other single source.