'For evidence just look at how many people opt to queue in the self service aisle, even when there is no queue at the human alternative.' I'd noticed that too

'For evidence just look at how many people opt to queue in the self service aisle, even when there is no queue at the human alternative.' I'd noticed that too here in London. TBH I feel I get better and more 'human' interactions from the people that police the self-service checkouts than behind the counters, because generally they're trying to help me when I need it.