This is what I think of every time someone makes an "Americans fat" comment. Sure, that's true, but if you honestly believe a 20-30% obesity rate is good then I don't know what to say. Y'all are headed the same direction pretty fast.
Plus, it varies across the US. In Washington, for example, the rate (while high) is under 30%, while West Virginia is over 40%.
And this is only for obesity. If you would include overweight the percentages would be much higher.