Yes, the obese weigh heavily on the health care system. But I guess you folks decided to overlook the preventative component of the proposed program. Rugged individualists that you are, you would prefer a form of leper colony for the presently obese and uninsured.
But why stop there? Smokers, of course, should pay higher rates, but what about those people who "choose" to live in areas that have higher crime rates and are therefore more prone to attack and injury? Shouldn't they pay more? And aren't there more health threatening pollutants in metropolitan centers? And what about people who choose important and responsible careers that can regularly induce harmful stress into their lives? Is everyone else just going to sit there and subsidize them? And what about pedestrians and cyclists who choose to commute without steel chassis protection from Hummer drivers? Aren't they just begging for medical attention and should be charged accordingly? The list goes on if you are imaginative enough.
The argument regarding the effect of the obese on the health care system has merit. But if you choose to open that door...