I clearly said I buy for two and would go more often if I shopped for more. Many, many people with families do this.
I'm in Norway. Vehicles are expensive, children (regardless of age) are used to going outside and going to the stores. It is a common situation in larger cities. Heck, elementary children are often enough at the store unsupervised. I'm not sure why you think a 20-30 minute car ride plus at least an hour at the store is worse than a 20 minute round trip to the store with a 10-15 minute store break is bad, even if it is a few times a week. And even that can be avoided by just spending a little time on your way home from work.
I'm in Norway. Vehicles are expensive, children (regardless of age) are used to going outside and going to the stores. It is a common situation in larger cities. Heck, elementary children are often enough at the store unsupervised. I'm not sure why you think a 20-30 minute car ride plus at least an hour at the store is worse than a 20 minute round trip to the store with a 10-15 minute store break is bad, even if it is a few times a week. And even that can be avoided by just spending a little time on your way home from work.