I get what you are saying but I think it leads to a slippery slope. You can point to an infinitely long list of things that could cause extra health care costs, from poor diet to speeding to promiscuity, etc etc. In fairness, the connection to smoking is more direct than most. In fact, some private insurance companies do charge extra for smokers. I'm just troubled by the government using this agument to get even more control over our lives.