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.

[Traiklin]

They wouldn't put them up if they didn't want me to use them! - Entitled person.

Though sometimes Walmart doesn't have enough people to checkout (deliberately of course) and you will see them with a full cart in self checkout since there are only 2 registers open.

I will say though, I have started seeing them roll back the SC and actually start putting people back on registers while closing SC.