Smoking
People know that smoking is bad, yet they smoke. Maybe, some of them do not know how bad it is. Some young men smoke for showing their smartness. They think that it's a kind of fashion. We know that man is a slave of his habits. Once he starts smoking, he cannot stop it easily. However, it is not impossible to give it up. What you need is a strong will. If we purchase a bottle of oil then we see its expiry date. But few people seem to bother about the statutory warning on the cigarette packets.
Why do they take it so lightly?