We cannot eliminate cashiers, replace them all with robots, cameras, monitors and butt watchers.
I cannot begin to describe the frustration I feel when forced to use a self-checkout in a store with no other options, such as the choice of a living, breathing, smiling human cashier . It blows my mind that some large, big box stores think it's a good idea to position staffers behind their customers, in some sort of wild (animal-like) chaotic corral filled with people, beeps, bright lights and your faces on monitors everywhere you turn. I'm not ashamed of my backside, but placing paid observers at my back side, when we used to have cashiers face us (while cameras are in my face and God knows where else) seems like a cold, big-brothery, stupid system. A forced system at that. I do grocery shopping as little as possible and prefer the transaction to be smooth and predictable.