>>michae+p6
Why stop at "fewer", with zero, there will be no problems to worry about at all. Besides, humanity is "90 seconds from midnight"[1] as it is. A little more hubris and just the "right kind" of attitude towards each other, and it will achieve the amazingly intelligent and glorious realization of zero population and zero diversity.
[1]: https://www.reuters.com/lifestyle/science/what-is-doomsday-c...