As humans we have reached a point where if we collectively decided to have fewer kids, whole social fabrics will collapse. Everyone's social security hinges of

As humans we have reached a point where if we collectively decided to have fewer kids, whole social fabrics will collapse. Everyone's social security hinges of having just as many people contributing to it today. China had to rid it's one child policy, and Japan is facing a similar problem. How do you support twice as many old people with only half as many working young folk. I'm migration may be the answer, but if the rise of "nationalist" movements around the world is any indication. Then natives don't quite want immigrants to be that solution.