You might even raise your standard of living. Of course, this is not true in all areas. If you decide to retire in Puerto Vallarta, for example, chances are that your expenses will not go down. English is spoken in many areas. Access to the United States is quick, and in most cases, fairly easy.
Gringos can buy and sell property.
The weather is warm, and in some areas, the climate is tropical. There are places where the weather stays mild during the summer. It is possible to stay in the country for longer than six months at a time without having to make a trip to the border. And maybe most importantly, older citizens are respected. One of the primary questions retirees have about Mexico is the quality of health care and insurance coverage.