Nice interactive graph on the prevalence of smoking in the US...PLEASE tell me WHY anyone under the age of 30 would freely choose to smoke. I really would like to know...

Smoking in America---Go HERE to view this interactive map on the prevalence of smoking in the US by frequency and age groups.  In this day and age, with all the available information, I do not understand why anyone under the age of 30 would smoke. I am not even factoring in the price of cigarettes, which by itself should be a deterrent...