From a strictly biological point of view many animal species avoid incest Do wild animals avoid incest? | Questions | Naked Scientists Of course there are exceptions, but there's a sound, biological reason to avoid this.
And it's related to growing up together apparently:
"The Kibbutz communities in Israel are a good example," she said. Only weeks after birth, mothers give their kids to a "children's society" staffed by trained caregivers. Lieberman said people raised in the same community are much less likely to marry each other than someone from a neighboring area.
And it's related to growing up together apparently:
"The Kibbutz communities in Israel are a good example," she said. Only weeks after birth, mothers give their kids to a "children's society" staffed by trained caregivers. Lieberman said people raised in the same community are much less likely to marry each other than someone from a neighboring area.