Ill take it a step further: I think child rearing is incredibly difficult if both parents are entirely focused on their careers and view them as their top prior

Ill take it a step further: I think child rearing is incredibly difficult if both parents are entirely focused on their careers and view them as their top priority. I think it works out much better if one of the parents is much more low key about their career and can shift focus away from it more easily when emergencies / etc happen.