I did see the poll,
@farouk, thankfully I never began the smoking habit, for I would have found it very difficult to break it I know.
Smoking was a cultural habit among males in years gone by, and not considered to be a bad thing; now we know that it is harmful to the body, and therefore not advisable. On that basis only would I consider breaking the habit to be a good thing. It is not something for which someone should be condemned, or judged.
It is an anti-social habit in that it affects other people, yes; and we know from research that inhaling cigarette smoke is harmful, even if you are not the one smoking it; but it is not morally wrong or sinful, that a believer's conscience should be troubled by it before God; only in regard to his fellow-man.
If by smoking in the company of others you are subjecting them to danger: then from that point of view it comes down to a lack of love towards your fellow-man if you do; which as a believer in the Lord Jesus Christ, whose desire is to show forth the love of God, smoking in company is not a good witness, and therefore is to be avoided.
Just thoughts.
In Christ Jesus
Chris