Smoking CAN fuck up your health, as exhaust fumes from vehicles, factories, etc., don't mean it will.
What the hell, we all are going to die, so why not just enjoy what little there is in life to enjoy, or at least do what you want to do, that isn't breaking any major laws, small ones in my opinion are ok
On the beer commercials, maybe they are trying to get the message out that you don't have to get 'wasted', just 3 or 4 beers while socializing...?
I'm sorry, but you people who are always making remarks about smokers piss me off highly! No one EVER makes remarks of the pollution vehicles emits, factories, electric companies, it's ALWAYS the smokers that gets mentioned.