Another thing that is very significant as to civilization is that (and this is taught in univeristy):
-- the literacy level overall reduces when mothers are not present in the home during their children's youth.
That is, the more often and frequently that mothers leave the home (work, negligence, hiring nannies to 'relieve' the responsibilities involved in rearing children, whatever reason, just that they leave their children in the care of others even after school hours), the lower the overall literacy rate.
Our SOCIETY actually suffers when women are not the caregivers of their own children, their own family. Children become more literate as the consistency of their mothers being routinely available to them increases. The less time they have with their mothers, the higher the overall illiteracy becomes.
Thus, women with children who leave their care to others due to whatever reason actually reduce the success rate and competency of society in general.
It's established, studied and proven...lest someone decry some 'guilt trip' mentality to that information, as if it's an effort to discourage women from working, taking flight when a nanny is afforded, etc., because most feminists do respond like that, as if it's some effort to coerce them to "be slaves" and such.
Women serve a very, very important place in the ongoing education of their children and among that is that, by remaiing available to children in the home, mothers "work" to improve our society, certainly their own children's abilities.
This bears repeating - and repeating. Excellent!