You're making the mistake of assuming that somehow humanity is better off because our population is larger. There is no intrinsic benefit to a population of 8 b

You're making the mistake of assuming that somehow humanity is better off because our population is larger. There is no intrinsic benefit to a population of 8 billion, 4 billion, or 2 billion. None of those numbers are a population bottleneck in any manner. For comparison, bonobos have a population of something like 50,000. Having more people doesn't improve the quality of life of those people. It's just more people.