I really have no sympathy for smokers...my former season ticket partner quit going to games because of them designating a specified smoking area in 2006 but they supposedly weren't clear on where it was (that was his reasoning for quitting, anyway)..still owes me $2K for several years of season tix, anyway...it's a disgusting habit that harms the people around you in addition to yourself...that being said, as much as I hate smoking, I thought removing the smoking areas this year was going overboard.
As far as the comparisons to drinking, one thing people haven't brought up is the fact that you can have a few beers without getting drunk or harming anyone, yourself included. Drinking in moderation harms no one....smoking, in any amount, is harmful to everyone