I've never come across a self-checkout machine that doesn't work, but that's just anecdotal. It seems silly to base one's general opinion on the concept of sel

I've never come across a self-checkout machine that doesn't work, but that's just anecdotal. It seems silly to base one's general opinion on the concept of self-checkout machines on how broken the ones you've experienced are. When I was traveling, I spent time in countries where toilets would back up more often than not, and that didn't make me think "Toilets are ridiculous,why do they exist".