"Every day three thousand kids become regular smokers, and a third of them will eventually die of nicotine-related causes." (http://www.nicotinevictims.com/observations.htm#3000) Smoking is the leading cause of cancer in the United States and the rest of the world. Due to the studies of nicotine, doctors have been able to conclude that nicotine is the most addictive and most destructive legal drug today. If you smoke it would be a good idea to stop while you"re not too far behind.
When people start smoking they get cravings to have something in their hands and mouth. At first they fill the need with cigarettes and eventually they are smoking a pack or two a day. During the first few months of smoking, the lungs turn brown and eventually black. The reason for this is the tar and nicotine mixture get into the lungs. The mixture sticks to the lining of the lungs, making it hard to breathe. Shortly after that, the lungs absorb the nicotine and tar into the body where cancer can easily form, and in many cases does. This process takes only a few weeks to several years. If you smoke for a long time, and you are old your lungs are probably black and full of tar and nicotine. However, your body will continue to absorb the cancer causing agents, and eventually your body's immune system will stop fighting it off and you will get cancer. This time your body is weak from trying to fight off the tar and nicotine. This makes it hard to fight off the cancer. As you go through life struggling with the cancer, and hoping that that day that you are living in, is not your last and hoping that you will get to see the ones you love the next day. For some this is not always the result. Every day one thousand people do not get to see their loved ones the next day. Some lucky people die at night peacefully, and other not so lucky people die in excruciating pain, others die because of suffocation. And for that person's family, they are in total shock and saddened by the loss of the one that they love and will no longer be able to see, only remember.