I agree that it’s often a question of geography, Doodledog. However some people still seem to assume that many of us still have family living around the corner - I know only one person who does - at nearly 70 she’s never moved from the house she grew up in.
Having moved many times, not out of necessity for the last two moves, my mother in her old age was 20 miles from my brother, 60 miles from me, about 250 miles from one sister, and an 8 hour flight from the other.
I might add that for nearly all of their adult lives, neither of my parents (born 1916 and 1918) lived within any kind of ‘popping in’ distance from their own parents. Neither did 3 out of 4 of my mother’s siblings. (My father was an ‘only’)
So it’s not as if it was a common given with an older generation, either.
By far the most moves in this family were always for work/better opportunities.