If they are past retirement age, they can live anywhere...another city in Japan, another country for a while.

People tend not to move around much in Japan. And in most of the world, old people in particular don't want to move anywhere, because the further they go the less they will have in common with the people around them and the less they will understand about how to get their needs met. They are being quite logical in wanting to stay as near as possible to their original homes.

The "let's move a bunch of ignorant old fools from this alien culture to somewhere that suits us" mentality is the kind of crap you expect from Zionists. Cut it out.