The addiction to nicotine is a stronger hook than most any narcotic. One of the greatest dangers is its legality and social acceptability. I have had the habit for 67 of my 75 years and so far have lost part of one lung due to cancer, and though I have many unfinished things left to do in life, I will never complete them because of emphysema. The choice was mine and so is the blame. If you possess any intelligence at all you will realize that your lungs were created for ingesting oxygen and not smoke laden carcinogens.