I was just thinking about a few possible reasons:
1) Better sex: yeah, the main reason why I quit myself (got out of breath every time)
2) (Thai) girls will like you more, your chances will skyrocket (I don't know any country where hygiene and body care is more important; shower before sex, shower after sex...)
3) You can reach the upper floor in Royal garden plaza, without having to go back downstairs and outside for another shot because you're not allowed to smoke in any building.
4) 1 month no smoking = 1 FREE Ticket in Sabai room body massage (all options included)
5) 1 year no smoking = 1 FREE Ticket to Koh Chang with your number one Gogo girl of choice!
(pic: Euro2008, German frontline...:-))
