More time also means your appetite is starting to get engaged, since it’s usually after work and you’re surrounded by attractively laid out foods. It’s just a fact that people buy more if they’re hungry.
So even if you just went to pick up a bag of milk on your way home, maybe some other stuff looked good too while you were there.
To force people to spend more time shopping. More time means more chance for impulse buying and better sales. Basic marketing.
More time also means your appetite is starting to get engaged, since it’s usually after work and you’re surrounded by attractively laid out foods. It’s just a fact that people buy more if they’re hungry.
So even if you just went to pick up a bag of milk on your way home, maybe some other stuff looked good too while you were there.