>throughout most of human history, people grew up with their mother, father, and siblings being the most important people in their lives.
Throughout most of history people grew up with their mother, 3 aunts, their dad, 5 uncles, and grandparents if they are lucky, learning the single trade of their entire family. The "Nuclear" family is the atomisation of this corporate family through modern practices (Finance, Tertiary Education, Suburbia)