[mrguyorama]

It only takes 1 employee to staff 20 self checkouts for comparison.

For a full fat grocery store. With zero change or adjustment to the rest of the grocery store. And customers weirdly like self checkouts even when they are a dramatically worse outcome (compared to the highish bar of well trained cashiers)

[octoberfranklin]

We like self-checkout because there's hardly ever a line.

An idle self-checkout machine costs the store almost nothing. An idle cashier costs the store wages. So the stores will always skimp on cashiers, leading to lines, wasting my time.

[dyauspitr]

What exactly is the point of a well trained cashier, what service do they provide. I guess I appreciate what the bagger does and the cashier knows the codes for the loose vegetables but those are minor benefits in my opinion.