The PBS News Hour had an interesting section in its July 6th. edition on Americans retiring to live in the the area around Guadalajara. Obviously the climate in the Lake Chapala area is very much more temperate than that of San Felipe and the cost of living there is also much lower.
It gives an indication of where Mexico is heading in the transition from the emphasis on youth tourism at beach destinations – partying all night, drink, drugs, sex and tanning – to the economic benefits to communities of “age in place” rest homes, medical facilities and personal care. Here is the link to the article – definitely worth watching.