My husband had been one of those that assumed heavy people were stuffing their faces and were lazy about changing anything..............until I put on 30 pounds in a couple of months while eating hardly anything and walking miles and miles every week. Rita Rose had it right. Sometimes your body has different plans than you do.
Like Knifegill, I get a lot of my food at Grocery Outlet. Lower income people shop there and at Walmart and there is a definite higher percentage of overweight people shopping there than say, Whole Foods. That doesn't mean the Pacific Northwest has more overweight people than other areas of the country. Plenty of vitamin D to be had here, also.
I really believe that people are not receiving the proper education about how things you eat affect other things. That is what I found so fascinating about the initial chapters of Primal Blueprint. All this great information I could have known 40 years ago!! Keeping that in my mind and changing how I eat accordingly, while it hasn't given me a magical weightloss beyond the initial 20 pounds, has given me so many other positive benefits. My husband has/had a horrible sweet tooth and had accepted that at 66 years old would have that big belly that aging men get and couldn't do anything about it. Down 40 pounds and is at his high school weight because we learned that what is being sold to the masses right now is not what your body needs to function. His medical problems are vastly improved. As for me, I still struggle with society pressures and worry more about the scale than I need to. I think that is why there are so many weight loss posts, like the OP pointed out.
My husband has known me since I was 15, 5' 10' and 120 pounds. I am almost 54, still 5' 10" and am back down to 186 pounds from 206, yet at no point did I look obese. Interestingly enough, even though the scale isn't moving I can see my body composition changing. Focusing on numbers, whether weight or clothing size, is counter productive. I have never worn smaller than a 12 nor larger than a 16 in spite of an eighty pound difference in weight. I am finally getting to the point where I am able to focus more on what my body can do versus the need to be skinny. It has been a struggle, let me tell you! It is really difficult when you do everything CW says will work and have it do exactly the opposite.
Of all the paths you take in life, make sure a few of them are dirt.