So, no matter which poor decisions I make, the gov should bail me out?
The fallacy with this statement when it comes to health is that it is virtually impossible to come anywhere near being able to tell which people got sick because they made poor choices and which got sick because of something out of their control. The cause and effect when it comes medical problems is something that is poorly understood on the grand scale and not understood at all when it comes individuals. In the case of diabetes, there is a lot of evidence that many cases are caused by a bad mix of bacteria in the gut, and that fixing that seems to help or even fix it.
There is even evidence that obese people may have gotten obese and diabetes BECAUSE their gut bacteria were off. Insulin resistance, type 2, causes excessive insulin production which then makes you hungry and store fat. Basically, it makes people fat on its own. Take any person and make them unceasingly hungry. How many of them would be able to resist becoming overweight?