A lot of people are moving to Austin, Portland, Seattle, and Denver/Boulder. No state income tax in Austin or Seattle, no sales tax in Portland. Home prices are rising in all of these areas, but are a bargain compared to the Bay Area or NYC. And you can still see a show, go to great restaurants, meet interesting people, find a good job, and have a livable amount of space for a family.
A place where you can get a cheap, large home, and pay no state income tax is Vancouver, Washington. The city itself isn't very interesting, but you are across the bridge from Portland, where there is a lot of great food and drink, and you can shop with no sales tax. You will rarely see snow, but you will see a lot of clouds/drizzle for much of the year, which can take its toll.
Austin has a lot of tech jobs and is sunny for much of the year, but brutally hot for at least 3-4 months if you aren't used to it. It's a fun place to live.
If you want more of a small nature town feel, you could try Bend, Oregon or Boulder, Colorado.
I have lived in Portland, Seattle, and Austin, and spent a lot of time working in SF, so let me know if you want more specifics on anything.