I hate using them most of the time because it's a bullshit hassle for me to unload and scan and bag all of my groceries, when there used to be an employee to do that for me. I don't work for the fucking store, their employees do, so they should do that work and get paid for it. The stores where I shop have gradually scaled back real cashiers for machines to the point that it's more inconvenient for all.

The only time I like using the self checkout is when I'm buying rubbers and sex lube. The cashiers always laugh or make a face when I put the Magnum condoms on the belt.