Population growth is not a long term problem. Fertility rates are approaching 2.0 globally. Even developing countries like Bangladesh that had a real effort to educate women about sexual health already have rates of about 2.1/2.2 i think, it is pretty narrow minded to believe that only "clever" people want small families.
Only Africa has large population growth still.
China have stopped the 1 child policy (such as it was, if you could afford it you had as many as you want) as they are worried of fertility rates being affected in the future. They have seen the situation of countries like Japan and Germany with a shrinking population.
I would be more worried about resources such as clean water and energy. When most of the worlds population is competing for as much water and energy as the average US citizen currently uses, then you have problems.
Only Africa has large population growth still.
China have stopped the 1 child policy (such as it was, if you could afford it you had as many as you want) as they are worried of fertility rates being affected in the future. They have seen the situation of countries like Japan and Germany with a shrinking population.
I would be more worried about resources such as clean water and energy. When most of the worlds population is competing for as much water and energy as the average US citizen currently uses, then you have problems.