Moving away from CA all sounds great if you are white guy with a white family, born and raised in the US. If you are not, your perspective on this will be very different.
Also consider the lack of high tech jobs in the center of the country. And last but not least, if your income is 50% more in CA and you save at the same percentage rate of your total salary (i.e. 10% into your 401k and 40% into your home) - don't you end up with more money at the time of your retirement? You can still move to TN then.
Just my two cents. I can't wait for people to start leaving.
G