I actually like the coming downward trend in population growth, especially considering dwindling natural resources like fresh water supply, etc.
Government & organized religion wants more people paying taxes or tithes to constantly replenish their spending practices to hold on to power. In 1952 when I was hatched world population stood at 2.631 billion, today it's at 8 billion, ... Homo sapiens began walking the African continent around 300,000 years ago and is the only species of the Homo genus that is not extinct. In 300,000 years we have grown from near nothing to 8 billion, perhaps we need a rest from breeding for awhile. If you believe in science, the entire planet is also overheating at an alarming rate, melting snowpacks from our local mountains to the arctic & antarctic regions.
In the West, women have chosen to have less children as they're now better educated, there are also newer and better job opportunities for them which offer a more fulfilling lifestyle, ... and lets face it, if divorced, many face a lifetime of poverty as children are not cheap to raise.
Trends are just that, who is to say that in a few generations making more babies doesn't become a thing again, anyway, science will manage a way to develop children outside of the womb if in a thousand or so years from now we actually face real extinction, but I'm guessing we'll find another way to kill ourselves off before a natural mass extinction occurs.
jmo.