@anne_twain @Gustodon @georgepenney The relationship to packing is that most of us don't live anywhere near your local independent supermarket. What I like about the scan-it-yourself systems is that I can pack as I shop and there is no damage, and none of the bags collapse through poor stacking when I move them into the car or carry them on the bus. Occasionally there's a complication when the staff need to inspect but they're receptive when I ask them not to jumble things up.
@anne_twain @Gustodon @georgepenney Aside from that, we have some checkout operators who pack very brutally. Only good if you like crumbs and bruises.
Then there are the ones who make unstable stacks that collapse as soon as the bag's moved, often with things like cornflakes and potato chips and delicate produce on one side for tins and bottles and frozen meat to fall onto.
I just don't have the cognitive capacity to deal with that.