@Oninoshiko re: no self-check
I'm the same. I also have stood in line while self-service kiosks stood empty. Part of my shopping experience is talking to the checkout chick (or sometimes guy), catching up on what the yoof of today are into (as I have no kids of my own, talking to the young people in shops is pretty much the only chance I get to catch up with the doings of the young). Even when I've been asked to use the kiosks, I've refused, saying I would rather be served by a person, thank you. The day they remove the choice and force me to use a kiosk will be the last day I ever shop there.
One thing I've also noticed is that my local greengrocers, butchers, bakers and the like are doing a roaring trade. It's not unusual of a Saturday morning to see a crowd spilling out the doorways of the local strip-shops. More and more people are shunning the dehumanising impersonality of the supermarkets, even if the prices are cheaper, because there's nothing like good old-fashioned friendly service from your local butcher, baker or greengrocer. The meat, bread, and fruit & veg is much fresher and better quality, too.
I do sometimes order my groceries online and get it delivered, but this is actually becoming rarer. I'd much rather take the time to go into my local butcher and have him fresh-cut a decent steak for me, with the rind of fat still on, rather than accept whatever stripped, fat-free, processed crap the warehouse-picker grabs off the shelf and shoves into a foam box to drop on my doorstep.
And I agree, like you, that I'd far rather my money went to gainfully employing someone who is willing to work, rather than filling the coffers of wealthy shareholders who do no work for a living and wax fat on the labour of others.
As would a lot of other people. Remember, the fact that there's a line for the manned checkout while self-service kiosks are empty means that all those people in line would also rather be served by a human being than by a computer. And they want it badly enough that they're prepared to spend time waiting to get that service. We're far from alone alone, friend.