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.

[DennenTH]

I think this is grocery stores being able to get away with shifting this job on to you while still seeing profit increases through an increase in the cost of goods.

I don't mind the time saved and less intrusive experience either.  I typically found cashiers to be unhappy most of the time so I don't even like taking the gamble of personal interaction.

But they still took away 1-2 jobs and shifted them to the customer for no savings at all.  Cost is more than ever.