(I'll ignore the fact that we currently produce more food than the world needs, and much of that food is destroyed.
http://www1.wfp.org/zero-hunger )
Children who survive can farm the land.
Children who die cannot farm the land.
Also, because so many of your children will die you have more children.
If more of your children survive you'll have fewer children.
http://www.irinnews.org/report/94947/lesotho-weather-extreme...
> In a country where nearly 60 percent of the population live below the poverty line, and some 40 percent live in extreme poverty, such weather extremes are pushing the coping mechanisms of families already devastated by the effects of HIV and AIDS to breaking point. Lesotho has one of the highest prevalences of HIV in the world. The epidemic has created a shortage of farm labour and left 130,000 children orphaned, according to the UN Children’s Fund (UNICEF).
> Malebohang Makhoathi, a 68-year-old widow, has over four hectares of land in Ha Makhoathi, just outside the capital, Maseru - more than enough for her to grow all the food she needs to feed the four grandchildren in her care, but she has not ploughed the fields for the last six years since her son, the family's main breadwinner, passed away. She has neither the money nor the manpower to cultivate the land and is contemplating selling it for short-term relief.
> “The money will make some difference in my family, even if it’s for a short period of time,” said Makhoathi, who will have to wait another two years before she qualifies for a government pension