I'm not one who shoots people down fot doing what they want. So here's my two cents.
You're going for the nicotine rush, which you'll find has next to no effect of causing cancer. It's just insanely addictive and feels awesome at first, though this dies down quickly. The cancer and health problems from smotking happens as a result of the other few thousand or so extra chemicals, especially tar in particular. Go for electronic cigarettes instead. You get your nicotine rush, and it looks exactly the same as smoking. It's doesn't leave your smelling at all, and it's FUN! You can get some awesome flavours and it's a great conversation starter. Best of all, you can smoke these anywhere. Try it, and if it doesn't work out, try to drop smoking in general. On a serious note, always remember that some of those dying of cancer started off quite like you: social smokers, handful of ciggies a week. Oh yeah, and they all 'promised themselves not to become on of those mad addicts'. Good luck and stay strong!