Historically most people used to spend for children and grandchildren significantly more that on themselves. The current situation when people go to other countries and then say we do not have money for more than one child is abnormal, and can't go on very long.

I agree that there are many better ways to organize social programs, e.g. replace all of them with negative tax, when some percentage of all tax collected past year is divided equally between all citizens of any age.

Sure well organized society is very impressive, e.g. invention of capitalism and private ownership is the greatest invention ever made, but the point i was trying to make is that it is only a foundation for really exciting stuff like science spaceships, immortality.