We give companies the ability to advertise harmful foods to children in a misleading way. We make healthier food more expensive and harder to come by. We create living environments not conducive to active lives. We then chastise the obese for not exercising their personal choice as if they made that choice in a vacuum.
Our main objective then as individuals should be to stay the heck out of hospitals! We also should be helping others to do the same by living healthily. Obesity is a choice, granted it may be an economically influenced one in some cases (people who eat junk tend to be less educated than those who do not) but by putting a fast food shop in walking distance of every school are we really being smart?