Absurd. Just because my wife and I can't have children doesn't mean we're not family.
You are correct, and I stand (sit) corrected. From dictionary.com:
1:
(a) A fundamental social group in society typically consisting of one or two parents and their children.
(b) Two or more people who share goals and values, have long-term commitments to one another, and reside usually in the same dwelling place.
I was thinking (a), whereas (b) obviously includes childless couples.
Have a great day.