I think part of the reason that people have given up on dieting is that at a subconscious level they know it doesn't work. They've done it before and are now fatter than they were before dieting.

The reason I couldn't abide exercise in all those years of low-cal/low-fat dieting was that I had no energy. I would "hit the wall" soon after starting because I wasn't getting enough protein and fat.

When will they finally admit that the same old solutions that have been thrown around for decades aren't working?