Forget everything you thought you knew about Mexican politics and their economy. Their economic growth rate is about twice ours. Their unemployment rate is falling fast while ours remains stubbornly high (which is why the illegal immigration rate to and from the U.S. now is a net zero). Their birth rate per mom has fallen in a generation from about five to two. Most promising, their new young president has taken on corruption, the all-powerful unions, and giant monopolies like Pemex and Carlos Slims’ empire. So while the US moves toward crony capitalism, Mexico is going in the other direction. Accordingly, if you make your plans based on trends instead of what exists now or existed in the past, then Mexico looks promising.
Spend a week or weekend in Ensenada or nearby locales (skip Tijuana!) talking to the a few of the thousands of other Americans living there to get the pros and cons of such a choice.