Customers won’t show up if there are too many long lines. Plus in my neighborhood folks get into shouting matches and fist fights if they wait around too long. One of the disadvantages of running a 24 hour supermarket.
For whatever reason most people seem to tolerate the self checkout, even though it is a frustrating experience a significant portion of the time. So they go in, and we get one cashier babysitting 6 or 8 self checkout stations.
