I'd say the same, if it weren't for the fact that unless you're willing to take the risk of not having health insurance, you're paying for them being fat, like it or not.
Most human beings have a strong unconscious desire to poison themselves to hide away from depression. Alcohol, tobacco, meth, food -- pick your poison, you'll be hard pressed to find someone who's not "on" at least one of them to run way from reality...
The economic incentive to end this insanity is precisely in the hands of people like you and me. We are not part of the problem, but we need to be part of the solution.
So go find 5 people who are either obese, alcoholic, drug addicts or smokers and help them get healthy! You'll be the one benefiting the most from it.