Probably there are different kind of self-checkouts. Only kind I've interacted with is "scan code/put here to weigh, bag is here, money goes there, till next time". Which is why I love them: can do everything at my own pace while still deep in thoughts, disturbing no one. Yeah, sometimes soft is buggy and help is needed, but not enough to make me hate them. Is there any other kind of self-checkout that is harder to navigate?