Link55 said:
And in what way does a cigarette help anybody.
You do realize you can use that argument for anything?
Video games, movies, soft drinks, candy, chocolate, sports, reality TV, mascara, alcohol, strobe lights, whatever. It's called a recreational activity for a reason, because people want to do it despite better intentions. (All work and no play makes Jack a dull boy...)
Also, you cannot simply ban an international multi-million industry that employs thousands to millions of people that has millions of people hooked to, on the basis that it's bad for you. Look at prohibition, people get buttmad.