Southern California born and bred here. Family and I have thought about moving out of CA due to the COL, but by the time I retire, the house will be paid off and all that has to be paid are property taxes, insurance, utilities. I'll get enough (knock on wood) in pension and retirement savings to have a good life in CA so why pack up?
for us it came down to-
being able to do most if not all (and more) of the things we did in california but at a greatly lower cost of living and much more relaxed pace of live.
financial-
we were able to get an almost identical home to what we had in california (but 40x the property it sat on) for a bit more than 50% of what we sold in california for (so more retirement money in the bank),
our property taxes though based on a higher assessed value vs. our california home (thanks to prop 13 rules in california which i keep hearing the powers that be are trying to tweak or get rid of) are less than half of what we we were paying back in 2000 in california,
despite snowy cold winters that have the heat running constantly in the winter (about the same amount of time we used the a/c for summer/fall in california) our utility bills run 50% less than we were paying in the early 2000's,
vehicle registration, car and homeowners insurance are a fraction of the price,
icing on the cake-no state income tax on our california pensions.
lifestyle-
we always used to say that the joy of living in california was you could go to the beach and the mountains in the same day. we never did b/c the traffic was horrendous. here it's considered a 'major backup' if the freeway speed drops below 50. we've got multiple ski resorts and while not an ocean beach-stunning lakes in abundance,
we enjoy going to the theater-hated having to go to san francisco and deal with the traffic, parking....here the same touring companies come to a great center with prices like i paid in the 80's for tickets and the access/parking is a breeze,
when travel is safe again-we have a great airport nearby (think john wayne airport back in the early 80's kind of traffic) so we can easily fly anywhere, we're a few hours drive from stunning portions of canada, and if we realy miss the hustle and bustle of urban life-we can drive to seattle (where we can again see an actual ocean beach).
it's not for everyone, but we love it and and don't regret it at all. i have family in southern california that i know would go stark raving nuts here but i've got others in northern who plan on packing it in and moving up in the next couple of years (esp. now that they keep having rolling blackouts).