A nice little site neatly sums up many of the reasons why I left the USA to come back home. Sure you can make more money, but pretty much everything else is worse.
Add into that the knee-jerk responses since 9-11 that make getting stuff done and moving around oh-so-painful, the general atmosphere of partisan politics and the food.
Meanwhile in New Zealand we get to take our annual leave, go to the beach, get outside into the bush and live in a stunningly beautiful place.
I do miss the USA though. For all the progress we are making in NZ, and for all that our economy is still on its feet after some pretty good hits, the USA is still the best place to do business. The opportunities are more abundant and the ability to expand is limitless.