People are only taking in the population amount and food requirements. In the next few decades, the requirements will be extraordinary. More and more third world countries are becoming first world countries causing living standards to rapidly raise. First world countries require much more resources because of higher living standards, such as technology, cars, food, fresh water, and the largest one, energy. The projected energy requirements 50 years from now is insane and unless we tap some new significant energy source, we are doomed. 16% of the worlds population consumes 80% of the worlds raw resources. 5% of the world population consumes 26% of the worlds energy. The fact is we can not provide first world standards 50 years from now at the rate first world living is rising. We can not continue living as we do, it just isn't possible.
I'm not saying human population control is the answer, but the size of our species is at the roots of the problem. That can not be denied.
Might want to check your math there mate