I believe that smoking is a bad thing and it should be illegal to smoke in public places, all advertising should be illegal as well so only kids of irresponsible parents who smoke have to suffer at home and possibly become smokers themselves. Quite a few countries began to make steps in the right direction in recent years, starting with public places.Check out what countries are doing about banning smoking in wikipedia.
Smoking is alreay illegal in Bhutan!

On December 17, 2004, in the Kingdom of Bhutan, a national ban on the sale of tobacco products went into effect. Smoking in all public places in Bhutan became illegal on February 22, 2005.

And might become illegal in New Zealand as well soon

MP Hone Harawira, who is drafting the private member’s bill, said it was “not about trying to penalise the poor addicts who are smoking cigarettes”.
“But the tobacco companies can go to hell. We will no longer sacrifice our generations so you can make profits.”

Smoking and NZ
* 25 per cent of New Zealanders smoke.
* Nearly 50 per cent of Maori smoke.
* About 5000 people a year die from smoking-related diseases.
* $1.2 billion is paid from taxes on tobacco.

article in New Zealand Herald