Its kind of shocking after having an infant myself and hearing from his grandparents how little my wife and I's fathers did. One never changed a diaper and has never cooked dinner and the other looked like he had never held a baby in his life despite having 3 kids. I can't imagine not being incredibly hands on and involved.

There’s often been a “kids are mom’s until they’re dad’s” thing going on - dads do whatever with babies and younger children but the older children get heavily involved.

Of course, 50+ years ago diaper changing was often skilled labor (as was cooking) - it’s much easier to change a modern diaper and cook a modern ready-to-make meal.