The number of people on planet Earth is about 8 billion. The number has grown exponentially, as numbers that are the result of exponential functions do. It’s something like the miracle of compound interest. The graph tells the story.
I don’t think we’re on the verge of starving ourselves. That Malthusian apocalypse gets proven wrong over and over. That’s because Malthusians fail to foresee the agricultural productivity ensuing from technology. For that matter, they fail to foresee the general increase in well-being and comfort that technology brings about.
I’m guessing Earth could easily support double, triple or maybe even ten times the current human population. Anyone who thinks we are running out of room to grow has never looked out an airplane window on a dark night over the Rocky Mountains.
Fine, Earth can support many more people. But how many people do we want Earth to support?