Why do people like coffee?

Many people all over the world rely on the caffeine in coffee to fully "wake up" in the morning. Coffee, a plant, that was utilized by nomadic tribes to focus during prayer, is now a daily necessity for millions of people around the world. Coffee beans were not roasted until the 1400s. Today, we see many variations of coffee-based beverages all over the world, ranging from espresso shots, made from finely grained coffee beans compressed with steaming water, to Starbuck's frappunicco: a line of blended iced drinks. The modernization of coffee has come to represent different cultures all over the world.