I know several families who are absolutely not a building block of society. Some not by choice.

I'll never understand how people think a personal anecdote contradicts a more general point attained by evaluating collected data that would include those anecdotes.

e.g. The claim: Planes are a very safe way to travel.

Followed by someone jumping up to say: I know a person who was injured in a rough landing.

Note I'm not claiming either the individual or family is the atomic unit here just pointing out that your contribution doesn't contradict or even narrow the argument.