Grandparents

An interesting article from the Globe and Mail:

http://www.theglobeandmail.com/news/world/americas/number-of-us-grandparents-raising-their-grandkids-rises-sharply/article1701865/

I don't know what to make of grandparents raising their grandchildren. It doesn't say much about their parents--excusing the sick or the dead; I can't decide if economics is a justifiable reason to not raise one's children, survival is one thing, a mortage quite another.