If the world was a just place, everyone would have to work in customer service at least once in their life. Because then they would know what it felt like to work in an utterly thankless job, and maybe their experience would change their attitude towards retail and customer service employees. Every job has its downsides, and it's not like people who work retail have to worry about getting the black lung from working down in the mines all day. But you have to admit, anyone who works in customer service has to deal with more than their share of idiotic human beings. As a wise man once said, this job would be great if it weren't for the people. Despite the fact that humans are unique little snowflakes, as soon as they head out into the world to go shopping, they quickly fall into neat little subcategories. There are pleasant shoppers, to be sure -- people who are courteous and prompt, who clean up after themselves and make an effort not to make the lives of the workers any harder. But then there are also species upon species of terrible customers who upset the delicate relationship that exists between shopper and retailer.