Because not all roles can be exchanged. Some of it is bad delegation, some of it is just the kids insisting that a certain parent do it, and sometimes it's just

Because not all roles can be exchanged. Some of it is bad delegation, some of it is just the kids insisting that a certain parent do it, and sometimes it's just biology (breastfeeding). Also something along the lines of dad cooking pizza, pasta, and oats, while mom cooks the real food. Generally, they want the real food every day.