I go there often as they have much lower prices on snacks/drinks than convenience stores or Walgreens, and there's one very close to my apartment if I need anything else from cleaning supplies to a can of chicken broth and don't feel like making a trip to Walmart or Kroger.
And there are stores in each of the small towns up north I vacation at. They're often the only store in town and there's always a line on the weekends, people buying snacks and coolers and beach supplies.
The stores are bare minimum, no flooring other than concrete, merchandise all over the place, and usually 1 employee working.