<human>:  Why do people tip?
<bot>: People tip because they want to show their appreciation for the service they received. Tipping is a very personal choice, and it is often a cultural norm. Some people feel that tipping is a way to reward good service, while others feel that tipping is a way to make up for poor service. Tipping can also be a way to avoid the awkwardness of not knowing what to say when someone is generous enough to leave you a tip.