It's no surprise that most people are of the opinion that the obese should pay for their sins through higher insurance premiums or higher taxes for the food they eat. Only problem is the obese more than pay for their sins by dying earlier than most of us and thereby collecting less in government pensions and retirement income.
You start a diet, you do moderately well, and then you completely fall off the wagon at a bar mitzvah party. By the end of the evening you find yourself up on a moral's charge involving two underage slices of cake. Worse, a week later, you learn that that one night of debauchery has cost you an entire week's worth of weight loss.