At age 70, I tried to live in Mexico. It didn't work out for reasons that are not important in this comment. I remember the difficulty particularly of trying to get from one place to another on buses. Twice, I asked the bus driver in reasonable Spanish whether his bus was going where I wanted to go and getting an affirmative answer, only to find out that I now had to get off the bus in a very rough part of the city and try to find my way back on another bus and then get to where I needed to go. Not something I would ever want to repeat, especially since I am now 80 years old.