For me the appeal of self checkout is that everyone gets in the same line and then fans out to the next free checkout machine. I don't have to wonder if I chose

For me the appeal of self checkout is that everyone gets in the same line and then fans out to the next free checkout machine. I don't have to wonder if I chose wrong when I see all the other lines moving faster. Some places with human cashiers (such as Marshall's) do this, and it's great.