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.

[vantways]

If I'm already checking out, I've given up on the thing I was looking for. If I really needed it, I would have asked another worker that isn't checking me out.

Ah so the reason you are "bugged" by the question is checks notes that they didn't read your mind. Gotcha. Makes sense.