I've long been a questioner of the modern, Western evangelical's obsession with the family. Somewhere, I even wrote an essay entitled Worshipping at the Hearth of Vesta characterizing Christianity's love of family with a form of idolatry. Of course, this hasn't been a very popular topic of discussion as you might imagine.
However, once again, I have found a kindred mind (if not spirit) in Richard Beck. See his latest post, " Theology and Evolutionary Psychology, Chapter 5: Family Values?"