You do realize that there is a limit. For example the limited resources on the planet. It can only support so many people. Question is how many? Do you know? Are we currently overpopulating planet? If we currently are what are you currently doing to help? As a member of the civilization it is our responsibility to realize if we are negatively impacting the planet meaning ourselves. Curbing ourselves only makes sense. It doesn't have to be a law just the common knowledge. Knowing how we are breeding and it's impacting our way to survive it's important.