> The world already has almost 8 billion people though The grocery stores are already full of food, why do we still need farms? If you ever plan to stop workin

> The world already has almost 8 billion people though The grocery stores are already full of food, why do we still need farms? If you ever plan to stop working you need young people to buy your 401k stocks from you and pay for your Social Security. The problem with low fertility rates is not (primarily) population decline, it's demographic collapse. As long as fertility is below replacement the proportion of elderly increases _forever_. What about immigration? The US is in a much better position wrt to this than many other nations because of our high rates of immigration but low fertility is a global phenomenon outside of a handful of places like Nigeria and Afghanistan. > the fertility rate continues to decline regardless. You're right. Nobody has figured out how to raise fertility rates once they start dropping.