I'm surprised at how often I've had this response from Americans when I've had a conversation with them, and explained how I've moved from Australia, and describe Canberra. They seem to be very down on their own country.
It's not that bad. I moved here because I wanted to see a bit more of the world, experience the American culture for myself, and to just live in another country. It's not every day you get that sort of opportunity, and seeing a place for a holiday (even an extended one) just isn't the same.
I already know Australia is the greatest country in the world, but it doesn't hurt to be reminded every now and then.