one thing is for certain, it definitely wouldn't be thailand. here for 2 reasons, the ladies tolerate the age difference, AND...no big ticket items in the economy for me, such as real estate taxes, school taxes, and utilities are inexpensive, though in that aspect, you get what you pay for. food prices about the same as states, all other things are much more expensive and lower quality. healthy enough not to worry about high tech medical, also a reason not to be here if having health issues.
Florida Keys ........
one of my favorite spots, tho probably a mess now. Ft Lauderdale also. so many caribean is. to chose from, bahama, caymans, puerto rico was very nice, and so many quiet places on mexico's coastline.
money no object, would even consider half the year in Philly, best food town in the world, always something to do, some multi national festival at least monthly. the rest of the time in the better scuba locations, again, thailand doesn't even make the list. florida to bottom central americas would be my first choice, as i would relearn spanish in less than a year. still with lots of international travel, and doubtful SE Asia would be on that list.