You don't have to go scouring my social media for weird, wrong, or wild opinions. I'll give them to you right here, right now.
Self-checkout forces labor on the consumer. I don't work here! So if I do the job of a cashier, I should get a percentage of what was saved in eliminating human labor.
Although in many stores, the self-checkouts are broken, so maybe they aren't as efficient as we think.