I don't want to come down on anyone for smoking for any reason, but there is tons of research (and not BS gov. propagranda) that shows smoking at an early age can adversely effect mental developement... Its your choice and I condem nobody, but I would urge young smokers to give this fact careful consideration, and draw your own conclusions... I abstained from smoking or drinking (well, for the most part) until I was of decent age (18...) just because I didn't want to risk my brain (which I consider my best asset). Of course, this was my personal choice and I attempt to force it on nobody... I just feel I should mention it ;)
