The past was not that cute

In our agrarian past, the cultural division of labor at the time said that men worked the field, women ran the home. And that later job was brutal, never-ending, and consumed all waking hours until the day she died.

Men broke their backs in the field, women consumed their lives doing the ceaseless work that never ended, every waking moment. (And occasionally helped out in the field, too).

Running a family was a brutal two-person job -- and the kids had to dive in to help out the second they could lift something heavier than a couple pounds.

We forget so easily that for the entire history of our species - up until just recently - simply staying alive and somewhat warm and minimally fed was a hundred-hour-a-week job for mom and dad.

There are important downsides, but the Green Revolution - and dare I say it, the industrial revolution - was truly transformative for our species.

In many societies before (say) the 18th/19th Century, extended families would have been the norm, e.g. with elderly relatives living in the same household, helping with food preparation and clothes making. Harvests may have been community-wide affairs. Children would have had to dive in, as you say, but they wouldn't have had school to go to, and there would have been a wide age spread. Maternal mortality (death due to childbirth) was high, and many widowed fathers would have remarried, extending the family further (incidentally this is partly why there are so many step-sisters and step-mothers in folk stories).