I'm sure you are a nice man and that the majority of the things you've done in your life have been for the good of those around you.
However.... I personally want to tell you that your evil robot creations aka self-checkout lanes at the supermarket are the most despicable things around. I don't personally have a desire to learn how to identify the product code so that I can weigh and enter my produce selections. I don't want to hear that bleeping robot tell me to return my items to the bagging center and least of all I don't want to wait in a queue while an attendant finds a moment from snacking on a Twix bar to assist me. I do actually have things to do Mr. Schneider.
And to that kid snacking on the Twix bar...you're lucky it was only a bag of peaches I threw at you to get your attention. I did have a watermellon in the basket.