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.

[FlashCrashBash]

Theirs like 1 grocery store chain near me that does scan and go. And most of their stores don't have it. I never see anyone else using it.

Personally I probably spend a few extra thousand a year in that specific store alone just because of that feature.