Loren Pechtel wrote: Population growth: It's not just a matter of contraception. In poor societies children aren't all that expensive (it doesn't take all that long before they're an aid to production) and they're the only insurance you have for old age (although it's not very good insurance.) In an industrialized society children become far more expensive (they need far more education and generally whatever they produce is for their own benefit, not the benefit of the family) the birth rate of course drops.
Loren, I do not mean to sound disrespectful, but you couldn't be more wrong. Having loads of children is hugely expensive for people in impoverished societies.
Firstly, the wear and tear on the mother's body because of near-constant pregnancy has such a detrimental effect on her long-term health that her life expectancy can typically be anything from twenty to thirty years lower than that of a mother in a developed society.
Secondly, having a lot of mouths to feed, from the limited yield of what is typically only a small plot of land, means that a farmer has that much less produce to sell on the market. This has all kinds of life-impacting consequences:
a. The farmer cannot improve his land with expensive modern fertilizer, or afford to purchase modern farming equipment, or transport whatever surplus he might be able to produce to more remote markets where he might get better returns.
b. As such, he is forced to rely on human labour in order to work his land, and since he doesn't have money to hire workers, he is dependent on the labour of his wife and children, which means that as the elder children get married and move away, he typically has to constantly replenish his supply of laborers. Having many children has nothing to do with productivity, but because otherwise he might not be able to work his land AT ALL.
c. No or little profit means that a farmer cannot afford decent healthcare, which in poor societies almost always is hugely expensive, unless the government is willing to go into high debt to provide such care. Typically, most rural people will live many days' travel from the closest clinic, and travel will almost always be terribly expensive, difficult and even dangerous because of the poor quality of the road network in rural areas.
d. Very few farmers will be able to afford to let their children attend school, especially high school, even when there is a high school within walking distance. There are rural districts in South Africa, which is one of the thirty largest economies in the world, where it can take a child up to three or more hours just to walk to school - one way. The consequences of little or no education does not require elaboration. Suffice to say that it means that young adults are tethered to the land.
It's a vicious cycle, and as rural populations grow and arable land becomes scarcer, the population pressure in turn leads to all kinds of turmoil that in turn make it more difficult for a society to escape poverty. The genocide in Rwanda in 1994 and the wars in the former Zaire (now the DR Congo) are just two examples of that.
No, Loren, there is nothing inexpensive about having lots of children in a poor society.