Look, I'm skinny as a rail, always have been. From my limited understanding, people love food. That's never going to change. It's really just a matter of making time for exercise and making an eating plan that works. In our busy 1st world lives, people get accustomed to worrying more about external problems like debt and work than internal problems like mental and physical health. Sometimes that weight gained is even a product of a food-based coping mechanism for an underlying mental health problem. That's why people stay obese.