I guess this should not be too surprising.<p>People of the same socioeconomic group tend to associate with each other, because of work, similar interests, etc. This is basically a clustering effect.<p>In terms of living distance from parents, if you live in an area where people tend to flock to (because that&#x27;s where the jobs are, or other reasons), then it&#x27;s further likely your friends will be in the same boat as you.<p>More reasons why anecdotes don&#x27;t necessarily match the overall population statistics.<p>* Note: Massive generalizations in my above statements.