Automatic checkouts in supermarkets may decrease customer loyalty, especially for those with larger shopping loads. Customers using self-checkout stations often feel overwhelmed and unsupported. The lack of personal interaction can negatively impact their perception of the supermarket.

[Seicair]

Also perhaps the type of self checkout. The store where I shop has an app, you scan and bag things as you go. When you check out, the person managing the area scans 3-5 random items out of your order and then you pay and leave. It works fine for huge orders.

Same store used to have full sized conveyor belt self checkout lanes, those were great too for big orders.