[codingdave]

Are you under the impression that all families exactly hit their target number of children? Some people cannot have any children, but desperately want them. Some have one or two, but want more. Some people... well, not everything is planned. I know a woman who wanted one more child, and had triplets. And that isn't even getting into people who foster and adopt children.

In short, while I can see the logic in your stance... it has little bearing on the reality of creating a family.