People are doing the math. If you make enough money in California you pay 10% of your income in taxes. First of all, what do you get from that 10% you pay that don't get in other states with lower or no income taxes? For the people paying the taxes the answer is not much. People also fail to account for the fact that the 10% they are paying is 10% of their GROSS income, not net after federal taxes. So if you are already paying 30% of your income in taxes that 10% can be a material increase in the quality of your life. It's the equivalent of receiving 16% more net income. Also subtract what you pay in increased food prices and increased housing costs you will be saving much much more by leaving CA.
People in California seem to believe that other parts of the country with lower taxes are hell on earth, they aren't. When I moved to San Francisco, I had many conversations with people denigrating my home state of Florida. In retrospect I can see this for what it was, a coping mechanism for having to live in such a terrible place and pay an absurd amount of money for the privilege of doing so.
The reason California has seen such economic success can be attributed to proximity to the fastest growing economies and largest manufacturing hubs in the past 30 years and a little luck. If you really need to live on the west coast, Washington state is a much better option.