Farewell — and good riddance — to the 'typical American family'

Mark Harris for BI

For most of the 20th century, the word "family" in America evoked a predictable picture of cookie-cutter cleanliness: the happily married husband and wife, their 2.5 kids, and one improbably well-behaved golden retriever, all under the same roof. But the nuclear family has steadily eroded over the last 50 years.

The...