Let's look 100 years ahead. With natural selection/evolution replaced by technology, it's not hard to imagine that the human species can survive with a much sma

Let's look 100 years ahead. With natural selection/evolution replaced by technology, it's not hard to imagine that the human species can survive with a much smaller population. So mass population decline plus space colonization will probably create a steady equilibrium, where the intrinsic value of a human equals the cost of keeping them alive.