Instead, you wind up with multiple queues so that people get hung up behind someone causing slow handling.
Have you tried not caring about how fast the other queue is moving? IF you are in a hurry then most stores have 'quick registers' for people who are buying less than 10 or some similarly low number of items. And obviously if you get behind someone with a full cart you'll be waiting a bit longer, but you can only guess about the last person in the queue. But if I'm not in a hurry and have too many groceries to go through the express lane, I don't see the point in staring at other lines and being upset if one is moving faster than yours. Over time this is one of those things that just averages out.
Have you tried not caring about how fast the other queue is moving? IF you are in a hurry then most stores have 'quick registers' for people who are buying less than 10 or some similarly low number of items. And obviously if you get behind someone with a full cart you'll be waiting a bit longer, but you can only guess about the last person in the queue. But if I'm not in a hurry and have too many groceries to go through the express lane, I don't see the point in staring at other lines and being upset if one is moving faster than yours. Over time this is one of those things that just averages out.