Comment by Telaneo

I'm not sure what labour is being shifted onto me that I wasn't already doing here. I already had to bag my groceries and swipe my card. Scanning items can be done in a single motion while bagging, so the overhead is non-existent to me.

Meanwhile, self-checkout removes a bottleneck in that there are now more places to check out, meaning I have to wait less and thus spend less time shopping. So all in all, no more labour done, and yet my time is saved. I call that a win-win.