The document discusses why people smoke cigarettes. Teens may smoke due to experimentation or fitting in with peers, while adults often smoke to relieve stress from work or family responsibilities. Both teens and adults may smoke to control their weight or to feel good due to the sense of pleasure it provides. However, smoking leads to serious health issues like heart disease, lung cancer, and death. It costs the United States over $150 billion annually in healthcare costs related to smoking. The document also provides some facts about smoking and ways to quit.