I usually try to avoid using self-checkout machines in grocery and drug stores because I'd rather help keep human jobs going.


My first choice of cashier is always an older woman because they're the most pleasant and the most efficient.


I will go to a male cashier of any age as a second choice.


What I always try to avoid are young women/girls.  They so often have such an attitude of surliness and behave as though it is asking the world to expect them to lift up an item and scan it.  It's like they feel that it is totally unfair that not only do they have to work but that they actually have to do something besides stand around looking bored.