Cashiers in the age of self-checkout are attracting old-fashioned customers. Without those cashiers you would lose a large customer base >60. So in itself it's

Cashiers in the age of self-checkout are attracting old-fashioned customers. Without those cashiers you would lose a large customer base >60. So in itself it's not useless as people can't cope with technology and need human interaction. I've seen whole development teams that were more useless then that.