The economics of having children

When populations grow rapidly, per capita incomes rise less rapidly, because investment and technology cannot keep pace. Reduced fertility would reduce the ratio of dependent children to work age adults, increasing possible savings. Maximizing future incomes per capita means having completed families smaller than parents usually desire. In the United States if parents typically had 2.1 surviving children altogether, the net reproduction rate would fall to unity and a zero population growth might be achieved in a.d. 2060 at 345 millions. The political-social-economic problem is that each couple wants more children for itself than all couples collectively want other couples to have. The State may need to encourage fewer births per family through taxes and subsidies.