Personally I love self checkouts. Except the ones that have a delay in the scanning so you can't scan multiple of the same items too quickly.
I bag items better than any checkout person. I also guarantee cold goes with cold, frozen with frozen, chemicals bagged separately, my snacks go back in the kid area of the cart, and bread is never crushed. I have a 45 to 70 minute drive home so I want all of my stuff separated so the cold can be packed to stay fresh. Additionally I am often buying for home, work, shop, and cabin so I want my stuff further separated by location.
I am very old fashioned in most aspects but this is one trend that I think you boomers need to stop fighting against.