As I said earlier, you obviously haven’t read the original post or the subsequent articles I posted on this thread.
You have no understanding of demographics and the interplay between life expectancy and fertility rates.
Read up on demographics and economics and get back to me.
It will be an eye opening experience for you.
I recommend you start with the books linked in the original post.
Among those who study demographics there is a universal acknowledgment that human population in increasing, and will continue to increase.
Because you don't seem to follow math very well I will explain something to you. 3.5 billion people need a birth rate roughly TWICE what 7 billion people have, in order to add a billion people to their population in the same amount of time.
Because we now have 7 billion people, rather than 6, a declining birth rate will STILL add another billion people faster than 6 billion at a higher birth rate added another billion.
I don't remember, back when there were only 6 billion people on Earth rather than 7, MISSING them in an economic sense.
Similarly, if the illegal population of these United States were to be economically encouraged to go home, it would not be an economic blight upon the USA because of their ‘missing’ population.
How do you reconcile your out of the mainstream view with the economic blight of those nations with huge birth rates, and the economic blight we suffer because of illegal immigration?
Shouldn't all those extra people provide an economic boon? Why don't they?