This whole culture of saying that something is too difficult because it's an addition is nonsense. Whatever happened good old fashioned responsibility and personal accountability?
A lovely rant, but you miss a very important point. Most obese people are depressed. They don't show it because their dopamine is so high from all the food they eat. Try to tell an obese person to NOT eat something. You will get a reaction similar to a starving dog protecting a scrap of meat. The old adage about eating a pint of ice cream because you were depressed? Yep, that's true. No amount of brow beating can force an obese person to diet unless you fix the underlying mental disorder. Wellbutrin is one of the few anti-depressants that shows a marked LOSS of weight in users. That's because it helps regulate your dopamine. Smokers lose weight. Why? Nicotine helps increase your dopamine. So why not just subscribe Wellbutrin to all the obese people? That's the rub. Most would take the drugs AND keep eating because dopamine is a rush. It would only make things worse in the long run. If you are person who can easily turn away from food, then you are not depressed.
So obesity has to be treated on multiple fronts. Education so the patient understands that there is a mental/physical component that must be fixed, i.e. the depression. That eating is NOT the solution, and that the feeling of well being can be acquired from other means. Richard Simmons, for all his silliness, was one of the few to really get this. His program worked because it made people feel better about their lives in general, and then try to slowly lose some weight. Dieting alone does not do it. As soon as you are feeling depressed, that pint of ice cream will be too tempting.