Given that the West is chronically sleep deprived, it should come as no surprise that the West runs on coffee. People drink coffee in the morning in order to make it to work without crashing their cars. They have another cup of coffee in the afternoon in order to beat the 3:00 p.m. slump. Then, many people drink yet another cup of coffee after dinner. It is so common that most restaurants will ask you if you want a cup of coffee when you are done with your meal.
Even if the afternoon and evening coffees are decaf, drinking coffee all day is still a terrible idea. Even decaf coffee has some caffeine in it, and that limited amount is still enough to keep you from sleeping well at night. In addition, coffee leaves you dehydrated and quickly causes people to form a caffeine addiction. Then, when you want to kick the coffee habit or cut back, you find you cannot.
Swap out your afternoon and evening coffee for a cup of caffeine free herbal tea. Flavors such as peppermint and citrus will give you an artificial energy boost not unlike coffee, but they do not contain caffeine.