Are childless people a problem?

United States Vice President candidate JD Vance and Tesla founder Elon Musk have publicly voiced their fears that people just aren’t having enough babies nowadays. They aren't the only ones who worry. The US fertility rate is at a historic low and well below replacement level -- like that of all other industrialized countries, a trend that has given rise to the pro-natalist movement. In this video I have collected all facts and numbers that you need to understand what's happening.