I have a feeling that the 40-hour week was more manageable when that was the total for a family.
I mean, if I had a stay at home spouse, and could come home from work to a clean house, dinner on the table, errands run, etc, how much more peaceful would life be? Someone at home to meet the kids off the school bus, take them to doctor appointments, stay with them when they get sick (instead of negotiating whose work schedule is better able to handle an unexpected day off). Then the evenings are freed up for family time, the weekends are freed up for longer-term projects or family outings or just relaxing. No more Sunday afternoon grocery runs. No more cleaning on Saturday mornings.
(And before anyone thinks about jumping on me for being antifeminist, I'm a female with a PhD in engineering who chooses to work fulltime, so don't worry, I'm not hankering back to the 50s.)
No, if my spouse and I could split those 40 hours, and each work a 20-hour week, that would sure be peaceful.
But I'm all talk right now. I think my company might be supportive of me going to part-time. There's a decent chance. But right now we are really enjoying the savings-power of a double income. Maybe in 2 years I'll drop to half time or something. So- it is a choice for us to have 2 full time jobs & 2 kids, and therefore we deal with the stress of that, until we are willing to cut the amount going into Vanguard.