Second hypothesis: we bring children to the world in order to preserve the cohesiveness of the family nucleus. This claim can more plausibly be reversed: the cohesiveness of the social cell of the family encourages bringing children to the world. In both cases, if true, we would have expected more children to be born into stable families (ante or post facto) than into abnormal or dysfunctional ones. The facts absolutely contradict this expectation: more children are born to single parent families (between one third and one half of them) and to other "abnormal" (non-traditional) families than to the mother-father classic configuration. Dysfunctional families have more children than any other type of family arrangement. Children are an abject failure at preserving family cohesiveness. It would seem that the number of children, or even their very existence, is not correlated to the stability of the family. Under special circumstances, (Narcissistic parents, working mothers) they may even be a destabilizing factor. Hypothesis number three: children are mostly born unwanted. They are the results of accidents and mishaps, wrong fertility planning, wrong decisions and misguided turns of events. The more sex people engage in and the less preventive measures they adopt - the greater the likelihood of having a child. While this might be factually true (family planning is all but defunct in most parts of the world), it neglects the simple fact that people want children and love them. Children are still economic assets in many parts of the world. They plough fields and do menial jobs very effectively. This still does not begin to explain the attachment between parents and their offspring and the grief experienced by parents when children die or are sick. It seems that people derive enormous emotional fulfilment from being parents. This is true even when the children were unwanted in the first place or are the results of lacking planning and sexual accidents. That children ARE the results of sexual ignorance, bad timing, the vigorousness of the sexual drive (higher frequency of sexual encounters) - can be proven using birth statistics among teenagers, the less educated and the young (ages 20 to 30).