first of all CONGRATULATIONS!

You ROCK!!!
Here are few reasons for you..
When Smokers Quit What Are the Benefits Over Time?
20 minutes after quitting: Your heart rate drops.
(US Surgeon General's Report, 1988, pp. 39, 202)
12 hours after quitting: The carbon monoxide level in your blood drops to normal.
(US Surgeon General's Report, 1988, p. 202)
2 weeks to 3 months after quitting: Your circulation improves and your lung function increases.
(US Surgeon General's Report, 1990, pp.193,194,196,285,323)
1 to 9 months after quitting: Coughing and shortness of breath decrease; cilia (tiny hair like structures that move mucus out of the lungs) regain normal function in the lungs, increasing the ability to handle mucus, clean the lungs, and reduce the risk of infection.
(US Surgeon General's Report, 1990, pp. 285-287, 304)
1 year after quitting: The excess risk of coronary heart disease is half that of a smoker's.
(US Surgeon General's Report, 1990, p. vi)
5 years after quitting: Your stroke risk is reduced to that of a nonsmoker 5-15 years after quitting.
(US Surgeon General's Report, 1990, p. vi)
10 years after quitting: The lung cancer death rate is about half that of a continuing smoker's. The risk of cancer of the mouth, throat, esophagus, bladder, cervix, and pancreas decrease.
(US Surgeon General's Report, 1990, pp. vi, 131, 148, 152, 155, 164,166)
15 years after quitting: The risk of coronary heart disease is that of a nonsmoker's.
(US Surgeon General's Report, 1990, p. vi)
Visible and Immediate Rewards of Quitting
Quitting helps stop the damaging effects of tobacco on your appearance including:
premature wrinkling of the skin
bad breath
stained teeth
gum disease
bad smelling clothes and hair
yellow fingernails
Kicking the tobacco habit also offers benefits that you'll notice immediately and some that will develop gradually in the first few weeks. These rewards can improve your day-to-day life substantially:
Food tastes better.
Sense of smell returns to normal
Ordinary activities no longer leave you out of breath (climbing stairs, light housework, etcetera.)
The prospect of better health is a major reason for quitting, but there are others as well.
Cost
Smoking is expensive. It isn't hard to figure out how much you spend on smoking: multiply how much money you spend on tobacco every day by 365 (days per year). The amount may surprise you. Now multiply that by the number of years you have been using tobacco and that amount will probably astound you.
Multiply the cost per year by 10 (for the upcoming 10 years) and ask yourself what you would rather do with that much money.
And this doesnt include other possible expenses, such as higher costs for health and life insurance, as well as the health care costs due to tobacco-related conditions.