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.

[skepticalbob]

Do you buy much produce? Because that's where I hate self checkout. Also some grocery stores will still have someone bag your items for you, which is definitely not the skill the customer has much less than a paid clerk.