The situation you describe has been happening for most of humanity.
IMO society is worse now with dual income + strangers raising children.
The only major benefits I've seen are 1) Woman have access to birth control 2) Women have equal rights. Everything else is debatable as "better".
I wouldn't call that strangers raising children. Obviously it depends on the amount of hours per day but it is not like you are sending them to boarding school and you only see them during the week-ends.
I also felt that putting my daughters to daycare helped them socially.