Decent addition to the paper delivery route... or if you have crutches. I am struggling to think about when else... ?
Maybe that walk to the water for a picnic (the preferred route is a 30 min walk from parking lot) usually involves a lot of tree roots, but having your 6 pack of soda and lunch and a chair carried while you manage a smaller bag, would be nice then, too.
Of course the $$ will be out of reach for most, and the holding power may be too low for function. My grocery store issue is more 20 lb sacks of flour and potatoes and a big bundle of toilet paper than the gallon of milk.