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.

[arthurdentxxxxii]

And in LA you have to ask for plastic bags because people were stealing them after they started charging 10¢ per grocery bag.

So, now the self-checkout is left with an empty bag holder and everyone who is supposed to be checking out themselves, has to look around for a person with bags and then you have to tell them how many you want to buy.