Cigarettes contain Nicotine which acts as a stimulant therefore making you more confident, sociable and friendly. Although Nicotine is a stimulant, it also paralyses the nervous system thus making you more relaxed.
It is nice when you are exremely anxious or stressed to breathe in a load of smoke which you can feel going down your throat and everything appears so much better. The first cigarette of the day also produces a nicotine rush which gives you an intoxication for a few minutes, sometimes you feel like you're flying.
Smoking also makes you more sociable and talkative and enables you to make many new friends in those restricted smoking areas and let's not forget the £1.7billion smokers in the UK contribute in taxes which pays for approximately 22% of the NHS.
I don't smoke and do not advocate or encourage smoking in any way. I am simply giving an alternative viewpoint towards cigarettes from my observations and interviews.