I expect that within 10 years smokers will be on their own with those medical related bills. They will have to sell off their own assets for medical care of their cancers and other related heath problems. Same eventually for obesity as well. You'll never see that, because social engineering doesn't work that way.
You're supposed to be held financially accountable for your neighbor's personal health. That way, you'll support nanny state laws to control your neighbor.
Smokers are not a financial burden as you imply: Smoking-related healthcare costs are a pittance to overall healthcare costs (8% in my state of Maine). If every smoker quit, healthcare costs would go down only temporarily and then rise above the amount you are complaining about now, because nonsmokers get sick too and for more years. Smokers more than make up for their extra cost by dying (their choice-not yours) sooner; collecting less social security and pensions, and less time in nursing homes.
The state tax on cigarettes is all gravy. This is all backed up by facts.