There's a difference between the adventure of vacation and spending 6-8 mos in a ******** country when you're retired.
You can rent a decent vacation house in Florida, Nevada or Arizona for < $2000/mo, have access to first-world amenities, like health care, paved roads, sanitation with access to all the goods and services you would ever need. No jungle diseases, no locking your stuff behind steel gates at night, and the risk of being robbed isn't a 24x7 worry.
I think over time one's perspective of retirement changes, I can remember thinking a 2 bed hilltop villa in Jamacia would be my utopian dream. So I spent a few weeks there... got tired of the beggers, drug dealers, prostitutes, and a chicken and fish diet.