I remember when I was stationed in the Philippines in 1976 during my Marine Corps days (I later joined the Navy). I got to know several American military people who had retired and either stayed there or moved back. They had many reasons. Some had married people from the country. Others loved the climate and lifestyle. One common theme was their U.S. military retirement pay, which at the time was good but you couldn't really live well on it in the U.S., would allow these guys to live in relative luxury in the Philippines. A retired master sergeant with maybe $600 to $800 a month in retirement could have a nice house, servants, a car, etc. It helped at the time that they had bases still there for medical and dental care, plus the PX. Of course that has gone away.