I used to think about this during college. I loved going down to Northern Baja to surf and it was never as crowded as California. I'm sure there is nice places to live with good security.Sounds snarky, but it's really the best advice. Rosarito to TJ playas is prime surf/living territory. The number of people commuting over the border to work in San Diego is quite astounding.
Every morning, thousands of CA plated cars pass through the Sentri lanes. Every afternoon, traffic can back up slightly on the 5 for those returning to MX via El Chaparral.
One of the (not so) great secrets of the Wall: it doesn't block/restrict flow for 98% of the people, either MX or US citizens. There are always tons of Baja plated cars in the Sentri lanes.
You may have noticed I mentioned Sentri a few times. If you cannot pass the background check for global entry, then disregard all of the above.
If you can, then you can enjoy being a first hand witness to the full economic linkage between SoCal and N Baja that is taking place. It's one of the great present/future trends*, so while the same old losers continue to complain instead of paying attention to what's going on, those with a clue are already in position.
*As every surfer knows - either intuitively or actually - population growth (as registered by increasingly crowded line ups) is an exponential function. That is, the doubling rate @ only 2% growth is 35 years. IOW, Calif will grow from a population of 40m to 80m in the next 35-40 years.
This dynamic is driving a lot of equity both out of the state and south of the border. Either figure it out and get with the program, or mope about and complain. Your choice - no one gives sh!t which option you choose.