Discontent is the mother of motivation. When you're something you don't like, be it fat, broke, single, whatever, you'll actively find ways to change and improve to attain a sense of harmony again. Fat's have that inclination too, but they're trying to break the system because they're lazy, unmotivated, useless entities. Instead of trying to leave their comfort zone to ascend the Matterhorn that is success and achievement, they're trying to smash the mountain to the ground, to make lesser the summit of accomplishment, and to devalue the climb that others have made higher than they can see. They don't want the peak lowered, they want it removed, so they can sit in their slovenly safe zone, hidden away from harsh reality and have a fleeting moment of a glance to the mirror where they can wheeze "I'm great too" before being forgotten as another failed evolutionary experiment in the vast well of space-time.