We are not addicted to making babies, or at least not endlessly. Take a look at Wikipedia's list of countries by total fertility rate, and then google for char

We are not addicted to making babies, or at least not endlessly. Take a look at Wikipedia's list of countries by total fertility rate, and then google for charts showing what's been happening to it over the last few decades. Most countries, the significant exceptions being in Sub-Saharan Africa, have TFR below or near replacement (2.1). When girls are allowed to learn to read, and when people move to cities women don't have all that many kids. Most of the world's current population growth is due to increasing lifespan. So don't worry about managing population. In a few decades the worry will be about keeping it up, not down. (With Sub-Saharan Africa, again, as the exception.)