Unfortunately I smoke. I managed to quit for around 3 months this summer but got sucked into smoking again.
I do what I can to respect non-smokers, I keep my smoke away from people that don't smoke and specially away from children (preferably I will smoke somewhere they dont see me do it, just in case they happen to look up to me and want to imitate), I don't smoke inside my home - I go outside, (if you make it an habbit to go always outside you will probably smoke much less). In an outside open area I don't throw the cig to the floor (I kill it and look for a trash can).
If I made a decission to smoke then it's my problem to deal with it and I won't make it your problem and neither will I shove MY bad habbit down your throat, just as I expect non-smokers to show me equal respect and not shove THEIR health-preachings down my throat - most of the things they blabber about is common sense, so spare me
If you don't smoke it is a really good idea to NEVER START. Smoking is like this annoying ex-boyfriend/girlfriend who brainwashes you over and over that being together is a good idea, you know it does not work out - yet you buy into it... untill you take a solid decission to be unaffected you will be cursed by it
And if you do smoke I recomend using will-power alone to quit, and if you must replace it with something else... try carrots - candy and sweets will make you fatten up and probably find a reason/excuse to start smoking again because it accelerates your metabolism and kills your hunger.
Nicotin-gums (and other nico-products sold in a pharmacy) are a very-very bad idea, since they get you hooked as well, when I worked in a pharmacy not so long ago I had people coming in to buy those nicotin gums every week and most of them had been chewing those for years. There is even this really suggestive advertisement from a Nicotin-gum company, the most noticeable sentence in the add said "do you miss the cigarrete?" - so they are just as interested in keeping you hooked as tobacco companies are.
In my opinion, a war on tobacco will be "just as successful" as the war on drugs, banning it alltogether might just increase the interest in it and will build up a massive black market around it and will create even more (unnecesary) victim-less criminals, people should be free to put whatever they wish in their bodies as long as they do not harm anyone else or force it upon other people, but they should also have the freedom to access accurate (and non biased) information about it, so they know what they are dealing with.
Prohibition in most of the cases only makes the thing in question more appealing.
Inform/educate yourself, be aware of the consequences and do whatever the hell you want to do...