Honestly guys, the push towards indiviualism has got to stop and to that end please stop using self-checkout. The greedy bastards are training you to believe that your labour has no value. If they were to offer you a 10% or 15% discount with your labour that would be one thing, but the fact that they are training you to do free labour and framing it as convenience for YOU has a deleterious effect on the working class, your labour value and how the working class and middle class are perceived within society. They have tricked you into doing labour for free and convinced you that it's easier for you, all in a bid to make them more money than they are already making strying to starve you.
Just think about the repercussions, if someone had told you in the year 2005 that we would have Security Guards in every grocery store you would be laughing them off the planet. If someone told you that you would be paying for shitty (non-waterproof) bags AND checking yourself out with groceries that cost nearly 3 times as much you would probably laugh yourself into an asthma attack. Then if that same someone advised you that you would be doing all this while toilet paper cost $12 and eggs $8 a carton you would probably recommend them a therapist. But here we are, and here we stand and so in light of that, please stop using self-checkout. Your labour has value, as does the people who work at these stores, don't help corporations and CEOs, who are profiting hand over fist from your wallet, profit off your labour as well.