Most on this forum would call these people "greater fools," but there is something to be said for living the life you want to live–when and where you want to live it–rather than putting your life on hold.
Excuse me but you can rent your lifestyle at a much lower cost than buying it. Same reason people rent tuxedos and wedding gowns. Because they only need it once.
Need a seaside villa for the summer? Rent it. Given the same amount of money, you can double your standard of living by renting.