The transportation revolution of our century made it possible for people to move thousands of miles away from their family with minimal effort at any time. The modern national and international corporation developed the habit of casually relocating people for purposes of advancement or corporate restructuring. The American military routinely relocates families as standard operating procedure.
Education frequently moves people around as well.
Weakened extended family ties make it easier for many to move around without hesitation, while the rise of divorce has also contributed mightily to our nomadic culture. My family and I have participated fully in this trend. But beginning with college and especially after Jeanie and I married we became modern nomads. Louisville, New York City, Raleigh, Philadelphia, Louisville again, and now Jackson. That kind of question gets your attention.