Married working co-upkeeper of a marginally proper household here. Having both partners work full time careers means that both of you are typically engaged with

Married working co-upkeeper of a marginally proper household here. Having both partners work full time careers means that both of you are typically engaged with the same kind of task during the same spans of time throughout the day, making it quite difficult to divide up housework efficiently. Productivity gains in some areas are typically offset by losses in others due to solving coordination problems and access to somewhat mutually constrained resources, such as only one kitchen, only one garage, sometimes only one car, and so on. There's a certain background miasma of stress involved in every decision about dividing labor, because if you are both building your careers it becomes a burden to risk a promotion for the sake of making sure the dog has a regular bath, instead of using that bandwidth to pull a couple extra hours this month to stay ahead of your metrics. This is especially true if you have children, who need eyes and hands nearby at all times when they're very small, and need transportation and enriching activities such as vacations with their whole family when they get older. You seldom can split that time up between partners in a satisfactory way.