Always used to be heaps of blokes smoke on the cadet camps I went to, typical teenage male "go on have a try" never really worked on me.
I spent a fair bit of time bouncing around in perenties with drivers who pretty much chain smoked and it never bothered me.
Then I became a social smoker, mainly when I'd had a few but I started doing it more and more, normally with less alcohol. It just became something to do, an excuse to go stand around talking **** with your mates.
Then the girlfriend wanted to try it and still has a sneaky one every now and then which I give her heaps about
To be perfectly honest, there are times when I miss it, other times not a chance.
I've got a pipe as well, and still get a nice cigar or two for fancy occasions but apart from that I haven't touched them in ages.
Keep a case of them on my desk as a temptation I feel comfortable saying no to.
Good luck!