I used to smoke, about 4 years ago gave up almost completely. I never smoke (or drink) 99% of the time, but when I'm on holiday I always buy a pack of cigarettes and also I'll generally have a smoke and chat with my brother when he's over.

Of course it's better if I never smoke, but I don't personally have a problem with having cigarettes occasionally. I'm lucky in that I can smoke for a week and then get home from holiday and not be interested in smoking at all.