I love it when people invent things to force everyone perform self service and call it 'progress'.
Any reason to like the old way is just nostalgia in my head.
Indeed, but not at McDonalds.
Despite the math working out insanely well for self service checkout, sometimes the gamble still doesn't pay off and the single employee burns through 4 carts faster than 6 self service checkout kiosks.
Costco does pretty good here though, drug stores go slow as hell.