[x187463]

Worth considering how car-centric America is. An 8-year-old is unlikely to have access to a grocery store to which they can independently travel. Once they're at the store with a parent, they'll just travel the aisles together. It's not as though many young children have the funds to make purchasing decisions, anyway.

[bryanlarsen]

Note that they're talking about an aisle alone, not about going to the grocery store alone. My kids were older than 8 the first time they walked to the grocery store by themselves, but I'm confident that I told them "you go grab the peanut butter you like" while I was grabbing something in a different aisle when they were around kindergarten age.