Whats the worst that could happen?

Good question but I got a better answer

According to recent studies, every year hundreds of thousands of people all over the globe die from medical complications caused by smoking.
Immediate effects upon smoking a cigarette stick:

1. Raises a person's blood pressure and heart rate.
   
2. Decreases a person's blood flow to body extremities like the fingers and toes.
   
3. The brain and the nervous system is stimulated for a short time and then reduced.
   
4. Dizziness.
   
5. Nausea.
   
6. Watery eyes.
   
7. Hyperacidity.
   
8. Weakened sense of taste and smell.
   
9. Loss of appetite.

But wait theres more:

1. Shortness of breath.
   
2. Chronic coughing.
   
3. Reduced overall fitness.
   
4. Yellowish stain on the smoker's fingers and teeth.
   
5. Smokers experience more coughs and colds as compared to non-smokers.
   
6. Difficulty recovering from minor illnesses.
   
7. Impotence for men, infertility for women.
   
8. Facial wrinkles appear at an early age, making them look older than non-smokers of the same age.

Because they experience these different side effects, they have a higher risk of developing diseases like:

1. respiratory tract infections (like pneumonia and chronic bronchitis)
   
2. emphysema (collapse of the small airways in the lungs)
   
3. heart attack and other coronary diseases
   
4. different kinds of cancers (lungs, throat, mouth, bladder, kidney, pancreas, cervix, and stomach)
   
5. stomach ulcers peripheral vascular disease due to a decreased blood flow to the legs

Once a person becomes addicted to cigarettes, they may find themselves experiencing different withdrawal symptoms when they decide to stop. These withdrawal symptoms include:

1. increased nervousness and tension
   
2. agitation
   
3. loss of concentration
   
4. change in sleep patterns
   
5. headaches
   
6. coughs
   
7. strong cravings

And they think its so easy to stop smoking.

For pregnant women, it is important to know that the growing child in their womb may suffer if they continue smoking. The effects of smoking to a growing fetus include: low birth weight, premature birth, or stillbirth. Even those who do not smoke are at risk of incurring diseases. Second hand smoke may cause lung cancer or heart problems to those who passively inhale smoke exhaled by smokers.

So its not just the smokers dying, others around them are suffering as well because of them.