Human children, like most other social primates, have evolved to do best when raised by an extended family unit. In modern societies we have replaced the extend

Human children, like most other social primates, have evolved to do best when raised by an extended family unit. In modern societies we have replaced the extended family (tribe) with daycare and schooling, and in some cases, communal areas such as parks. Without the interaction of other adults and children, children get quickly bored and require much more attention than a couple let alone a single individual can provide.