I agree that increasing number of kids isn't the bullet proof argument for better safety nets especially because there are many factors. There are parts of this

I agree that increasing number of kids isn't the bullet proof argument for better safety nets especially because there are many factors. There are parts of this where it is true for my wife and I. Maybe if child care for a single kid wasn't consistently eating up large chunks of my paycheck for the past 4 years, I would have been less inclined to get a vasectomy after our 2nd. There is also the cultural aspect of, my Wife wants to be both a mother and have career. It is possible, but some fields or companies seem to disincentivize this. And there are many reasons for her to have both. First, she won't be a raising kids forever. Second, if our marriage falls apart or something happens to me, we both believe she should be able to be financially independent.