"By contrast, the Bible actually teaches a radically subversive
message about the family. God, we often discover, is the cause of
barrenness in women. Stories of family dynamics rarely flatter. You'll
never find a Leave it to Beaver household in the Bible. Rather,
we see constant distress, rivalry, and jealousy. Usually this dynamic
doesn't result from undervaluing children. No, we see it when children
become the most important thing! Not only that, Jesus also has
some deeply alarming things to say about the family, sounding almost
cold and uncaring---see Mark 3:31-35 and Luke 14:26.
And finally, it's difficult to make family the most central thing for
Christians when the two most prominent figures in the New Testament,
Jesus and the apostle Paul, were both single. Actually, Christianity
made singleness a legitimate way of life for the first time in any
culture or religion."
An excerpt from this post by John Starke.