Smoke is a habit for some people,when they think they like to smoke for focusing on the question.But for the other people,too much smoke means killing themselves and addiction,they cant control to smoke all the time,some even cant leave cigrette for just few minutes.What I think of smoke,it is just about who you are and what you can do to your mind.If you are strong-mind-controller,then no worry,you wont be the loser when you face on cigrette,in opposite,you'd better cut it off as soon as possible.
The great detective ever in the history,sherlock holmes is a strong smoker,but he knows when he could or say he should do it,it never seizes him.
But you see,in real life,apparently human is not that much strong to againt the temptation of that little thing.Lung cancer comes mostly because of overdose smoking.So,just admit it,we are not strong,better leave it alone,like far far away from you.ever and never.