Here's an unscientific observation. My wife lived in Madison, Wisconsin for a period of time, but was not necessarily that happy. That lone fact has not stopped the city from just being named one of the happiest cities in the entire world.
I will admit that I don't agree with the internet on many things, but this is an exception. Their declaration of the best 'hole-in-the-wall' breakfast place in Wisconsin is spot on and its famous for big portions.