I’m happy to admit it. I used to smoke. My only regret (apart from ever taking it up in the first place) is that I didn’t give up sooner.
This is because one thing happened more or less instantly after giving up, something that I didn’t expect. And it was this: folks who you saw smoking on the street or in the pub suddenly looked dependent. It’s a difficult thing to describe, but basically it looked almost like the smoker was hanging off the end of the cigarette rather than the cigarette hanging out the side of their mouth.
No need for me to rehearse here the benefits of giving up. If you’ve been living under a massive boulder, or on a planet other than this one and have missed the smoking & health drill, just email me and I’ll gladly put you in the picture 
What I would like to do though is point y’all in the direction of a new resource that I discovered recently – the Department of Health on YouTube. Here’s one of their videos – interesting stuff. And now that smoking really is only the habit of the few (most of whom know the risks full well), campaigbn vids like these are much more effective than when I was a kid. You can see the screen, and not have waft away a fog of smoke, for starters!