Larry Elder's post at Townhall.com today

talks about single mothers. The key quote is the denouement:

In his book "My Father's Face," James Robison wrote about a chaplain in a federal penitentiary who decided to improve morale. He persuaded a greeting card company to supply him with Mother's Day cards for the inmates. The prisoners enthusiastically sent each mom a card. Morale improved so dramatically that the chaplain decided to repeat the success on Father's Day. The chaplain offered the cards to the inmates. But not one inmate sent a card to his father. Not one.