CONTENT PREVIEW

The Roland family is an endangered species. Frank works as a pharmacist. Denise stays at home to care for their two children, Emily, 5, and Aaron, 2.

It's an "Ozzie and Harriet" life, harking back to that happy family of 1950s television fame.

But today, the Rolands' lifestyle represents only about 10 percent of all households, according to the most rece
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