Smoking cigarettes is really stupid. Nothing out of it except for social benefits, which you can make differently. Soooooo . . . don't smoke cigarettes, it's stupid and useless.
That's your opinion. Don't expect the masses to do things based on how you feel.
It's terrible for you and your health sure, but many people don't do it just for social acceptance. Smoking, like many other substances, becomes an addiction.