Yes. I am not worried by population decrease. In next few generations, it will ease the burden on the world's resources. If it went on for long enough, it could lead to extinction but perhaps 1000 generations of people making their own life choices better than 100,000 without?https://twitter.com/djhc2/status/999242834778697729 …
That;s why I said 'If it goes on long enough'. It's quite possible that it won't for cultural reasons and also very likely we'll find a way to make & raise babies which is less painful and less hard work for the mother in that time.