Like Deb, I strongly disagree with this statement. True, smoking is not as prevalant in American society as it was 20 years ago, there are still a lot of smokers. I can't tell you how many people I know who have tried to quit, but can't, knowing full well the long-term effects smoking will have on their health. And this battle affects all Americans who buy health insurance, as health insurance rates are inflated by the costs of long-term care for smokers and even former smokers. I think the OP has proved by this very thread that the fight against smoking is not over, because it showed that yet another 12 year old is learning that smoking is okay, from her very own mother. Unless she has a very strong will and/or strong constitution, she will most likely (going by statistics) become addicted to nicotine, smoke cigarettes most of her life, have smoking-related health problems later on, and end up costing herself and all of us a lot of money in what should have been unnecessary health care costs.
There are many people who are simply fat, and not because they eat too much, or get bad nutrition. They are just born that way, and they are not necessarily unhealthy. I'm a skinny guy (or was), and a friend of mine who is probably 65 pounds heavier than me can out-race me on a track and can out-play me in racquetball, simply because he's in better shape than I am. I'm no slob. He's just a healthier guy genetically than me. This guy, who is technically obese but does not smoke, is far, far healthier than anyone I know who smokes more than half a pack a day, but are my weight or thinner.
I think the fight against smoking has a long, long way to go before it can be considered "won". I don't want to discount obesity as a problem, but just because obesity is a problem does not mean we've gotten rid of smoking as a problem.