Argentina. Cheap land (for now), educated population (good for conversations), good food. I can tolerate governments falling every once in awhile. Besides, by the time I hit 70, I may be looking for a new wife, and Argentina has plenty to offer.
Retire? Never!
But if forced to, then Vina Del Mar, Chile is near the top of the list. On the beach, Mediterranean climate, metropolitan Santiago just 60 miles away, best economy in S. America, deserts to the north and cool forests to the south, skiing at the top of the Andes within a 2 hours drive, and still relatively socially conservative (lots of good Catholics and some evangelicals, too.) Home prices are still very affordable, saw a 3-bedroom clifftop with a poolside view of the Pacific for $250,000.