Population is a complex area. To arrive at my current point of understanding, it took me a number of light bulb moments over the years since 2013, with many realisations shattering some of my previous beliefs, and sometimes taking years to be ready to take the next step. Here is a recap of my journey, and if you can move quickly from step to step, then you can absorb information faster than I can, but perhaps this information will inspire others on their own journey.
Humanity has just experienced a population explosion. Whether you believe we are overpopulated or not, the facts are that we have had a population explosion. A period of population growth that peaked at rate over 100x accelerated above the average over human history. Why? Not because of more food, the industrial revolution, or improved farming or access to fossil fuel, but due to modern medicine.
I have been asked on a few occasions, why not end population growth now? It is not like we need to get more people first. Japan has stopped population growth, why not the rest of us? What are we waiting for?