smoking : should be banned in public places

Nowadays many people smokes in a public places such as (airport,restaurants,streets,etc) but actually they dont know the dangers of this habit.

Firtsly they damage their selves by doing it and what is more they damage other people life , whereas other people want a healthy life. Secondly they waste their monies on it . How ever we can put our money in a good works such as ( charities,or in positive way).
people who smoke makes their life shorter it`s a kind of suicide, on the other hand people who dont smoke they enjoy healthy long life.

A study prove that people who smoke they increase thier chance of having cancer and other disease more than the others who dont .

Thirdly, to have a clean fresh environment we should stop smoking in public . In my poinion the government should do smokings rooms where it`s allowed to smoke in it. How ever if some on smoke in public should pay a fine.

Also there are many reasons . But For these reasons many people would welcom a ban on smoking in public where they might irritate other.