Did you read the article about the most miserable cities in America?
Here is the link to it: http://realestate.yahoo.com/promo/americas-most-miserable-cities-2011.html
Basically what is says in a nutshell is California sucks. More accurately the great central valley sucks. You can read the entire article yourself and learn how the cities were analyzed for misery. But as a former central valley resident I can tell you what makes those places suck.
When you live in a gated community that is surrounded by ghetto, there is a problem. When on every fence and commercial building wall there is graffiti, the place ain't none to good. When you go to a convenience store to buy a soda and the clerk is behind bullet proof glass, you are not in a great area. When you go to the DMV to register your car, and the workers are playing solitaire, and the line is 50 deep, and only half of the people in that line speak English, things are going bad. When you get panhandled while pumping gas, and at the grocery store, and at Home Depot, and at every intersection, and at every freeway offramp, and at your house in a gated community, there is a problem.
When half of your valley, that used to be farmland, has no water in which to grow food, matters are not good, When half of that same valley seems occupied by illegal immigrants, that were farm workers, but now are not, because there are no farms, and yet they still live in old dilapidated farmhouses, and throw their trash on the roadside, and live off the system, it is not utopia.
When you go to the emergency room with a broken leg, and no one else there in the waiting room speaks English, and they all seem to just have a cold or the flu, you are in trouble. When normal middle class folk cannot afford to register their car, or they cannot pass the smog requirements, things are going the wrong direction.
When unelected bureacrats make laws, and when every politician is a liberal who has never run anything except the local activist hangout, you had better run. When criminals and union thugs hold sway with your govt, it is time to leave.
Misery loves company. If you see any of this happening at your locale, take action. It happens fast. Believe me.