> I think people need to keep in mind how important children can be in terms of securing your comfort in your old age.

As much as I see your point, that is unrealistic for many, many people. Especially in the US where that is not prominent societal norm.

My parents live thousands of miles away from any of their children. Most of my siblings don't have the money to save properly for their own retirement let alone support their parents. And housing situations often do not support two households living under one roof.

And this applies to families that still talk to each other.