Of course smoking affects your health, haven't you heard of lung cancer. A few of my family members have died from lung cancer that was caused by smoking...
smoking will kill the smoker and the person who doesn't smoke at all. Second hand smoke also kills people. Look at Dana Reeve (Christopher Reeve's ) widow. She never smoked and she died of lung cancer. she got it from second hand smoke.
I am not smoking person, its not that I hate people who smoke but I just cant stand smoking even if some one next to me is smoking I feel sick. Smoking does affect our lives.
There is no good reason for smoking. when i started it was the cool thing to do. years later i started finding out the bad things about smoking, now i dont smoke.