I agree that very few “Boomers” are moving out of SoCal–we’re boomers–and no one we know is. From what I’ve read, it’s many younger people who can’t afford to stay, are tired of being one of the 7 million+ and growing, renters, and/or find better job options elsewhere.
CA has always been a double-edged sword when it comes to housing. Most people enjoy seeing double digit appreciation for themselves, but it doesn’t work out as well when their kids want to buy homes. Probably why almost 3 million young adults in CA–some into their 30’s are living at home–with no end to this trend in sight.
Not that it’s not great to have your kids around–we love our kids as much as anyone–but, now that they are adults, we’re still very glad they have their own homes.