I was listening to a podcast where women were discussing the actual reason why modern day mums are absolutely exhausted cause raising a child was never a one or 2 people job but it was supported by whole extended family, lots of family members used to live together and support each other in raising children, that's what family was about. On top of that women used to stay home and not work which meant focusing solely on home and children, which I think would be easier to do than juggling home, kids and a job.
I am utterly exhausted with 2 children - a toddler and newborn and so are all my friends who have 2 children. People with one seem to be doing okay but still juggling all the plates.
I think this explains the ever slumping fertility rates in the West. Sigh!