Do we really need to worry about population growth when some countries are already shrinking? Japan's population has been declining for over a decade, and Italy is not far behind, yet both seem to manage their aging societies somehow. Meanwhile, the UN projects we'll hit 10 billion by 2050, mostly in Sub-Saharan Africa. I'm torn between the environmental argument for fewer people and the economic reality that many nations are desperate for more births. What's your take on whether population size is actually the problem or just a symptom of deeper issues?