If you’re only commuting to work then back home, that’s just one round trip. If you’re also the one primarily doing household errands and bringing kids to school/extracurriculars/doctors appointments, etc on top of working, that’s several trips in one day and a lot of extra time spent in traffic.

The way most modern cities and roads are designed has not changed much from a time when men were breadwinners and it was assumed that they had a full time homemaker wife. This has changed since 1960. Now most women also work either out of necessity or because they don’t want to be stuck at home financially dependent on a partner. Unfortunately, the expectation that a working individual has a spouse at home doing the unpaid household labor has not changed, nor has the infrastructure of our society in regards to it.