The cashier would rather you leave them in peace than hit them with the same tiresome self-congratulatory remark they hear day in day out. Please use the self checkouts instead.
In the local grocery store at rush hour, cashier lines are long and self-checkout tends to be quicker for buying 3 items. Taking a whole cart into self-checkout is slower than a cashier, because the self-checkout has like a 5% chance per item of going into "assistance needed" mode.
I just want to pay for my items and get out of the store, in whatever way works.
I find places with scan as you shop apps way better than waiting in a checkout line. I get a running total of what I have in the cart, and when I'm done, I just leave without a line.
As pxl97 said, I preferred being able to scan things as I shopped and not have to stop at the checkout except to pay, but the one place around here that had that discontinued it a few months ago.
We need to push back hard against the idea that automation is "stealing" people's jobs; the promise of automation has always been that of more money for less work. We need to remind everyone of that, and reverse the trend of automation simply putting more and more money in the pockets of the already-wealthy at everyone else's expense.
get those good old shopkeepers to do it while you stand with your list out front.