"Chosen Families" and Church

Here's a video that came attached to a story in The Atlantic Monthly. In it David Brooks examines the freakish occurrence, and persistent strictures and limitations, of the "nuclear family" in American society.

If you watch this, keep in the back of your mind the question, how much church might be one sort of "chosen family," and particularly how might the Church on the Hill be that for the people of Lenox?