I guess it would be nice if the majority of the younger generation could afford a coastal home (let alone raise a family) in SoCal, but that is just not very realistic right now. So, they end up moving to places like Temecula, Murietta, the Inland Empire, etc. These places are nothing more than dessert within a VERY rough commute of major cities like LA or San Diego.

What I think has happened to many is that they think if they are going to be moving to a dessert, or otherwise undesirable (non-coastal) location, why do it in California? Why not move to Arizona, Nevada, Colorado, Georgia, Florida, etc? They are having to put up with the hot weather anyways. Might as well have a nice home with a big yard, and fewer taxes/regulations.

Unless you can live within a few miles of the coast and enjoy the weather benefits there, why stay in California?