Why do people like to smoke?

I hate the smell of Cigarettes. Why really people want to smoke? Some I think do it because some hero looked very stylish while smoking and then on it becomes a habit. Some do it because there friends are doing it and if they do not smoke, it will make them look old fashioned.

But they do not realize its a nasty habit, hard to get rid of. It leads to cancer and not only the smoker but his or her family is also at risk. So smokers please get away from the smoke.