The wife and I have said for years that there may well come a day when a certain age is reached and you are no use to the planet, just a drain, that said age will result in, well, termination. Maybe a while off yet but we both agree that having gerzillions of kids should be a thing of the past. China in our opinion has at least made an effort by restricting how many a couple can have.
Would make a huge difference if the various Governments would STOP financially helping out when you have kids. Utterly farcical. If you want children then you pay to support them all the way through without help from everyone else.
Alien invasion would be helpful; a worlwide plague, or whatever to reduce the numbers. Tis about 6 billion top heavy (in my personal opinion, just that, and it is just my opinion.
Mozzy