Well, in Arcansas and in the USA in general a family with 15 kids is rather an exception from the general trend. But in the Third World procreation takes place at such high rates, that it seriously endangers the Earth. Fertility rate in Angola is 6.38 per female, Burkina Faso ?- 6.24 , Gaza Strip ?- 6.17, in Burundi ?- 5.99, in Afghanistan ?- 5.64 (numbers taken from the site
World Factbook). All these countries are unable to provide their people with any guarantees of good future, so this high fertility rate is tantamount to creation of millions potential criminals and terrorists.
For comparison purposes: fertility rate in the USA is 2.07 per woman, in Germany ?- 1.37, in Israel ?- 2.5, in the UK ?- 1.66, in Sweden ?- 1.54, in Japan ?- 1.38.