Banning of smoking in public places; "Smoking is injurious to health"

Please correct me and guide me if feel need of modification.
"Smoking is injurious to health" is the line that draws my attention, while watching a movie and it forced me to think why ? and I started to search for it and its unbelievable and really heart wrenching that very vast number of people are getting died yearly due to this smoking and top of it our India is among those top ten countries where this number is high.I am also in big favor for this banning as smoking is not only injurious to health of active smoker but to passive smoker even. Passive smoker can also get infected by lung cancer , bronchitis and asthma kind of life threatening illness.It is sheer wastage of your money even.As addicted person can smoke large no of cigarettes daily and spend lot of money on it.

Smoking is harmful to the environment even.Due to smoking large amount of poisonous smoke can get released into this environment .This ultimately lead to increase amount of carbon monoxide in our surrounding .It helps to pollute the air and results in air pollution.

In order to avoid all these bad consequences and to save our life as well as our planet ,avoidance of smoking is the only way as prevention is better than cure!

Try not to use questions in the intro and use facts or history(However, do not use defintion)
First, details about your reason is too short
Second, try to use survey in your body.
Third, clear your reasons
Fourth, follow the format,intro-body-conclusion(can't distinguish body and intro)