> Why? They're completely unneeded, I can do (and WANT to do) that myself.

Do you WANT to do that?

I've tried to run my own items at the corner store via the automatic checkout. Whenever I buy lightweight items or items that lose weight during the day (fresh bread) the anti fraud weighing system lights up. And I like my fresh bread.

So I've gone back to the one manned checkout. Judging by the lines I get sometimes, so have most other customers.