I have literally never used self checkout without needing to wait and flag a person down to help fix the stupid machine.

A professional is about twice as fast as me in scanning groceries so I’m stuck there for twice as long as I need to be, with enough room to scan maybe 2 bags worth of items. If I have a trolley full I’m fucked.

It is a worse experience by every metric, and the worst part is you have no choice. I can’t recall the last time I saw an actual human staffed checkout that wasn’t a 12 items or less line.