The trend here isn't the food itself. We've been eating like crap for a long time. No, the trend is our interest in it--our inability to not read a story about the next big hamburger.
Implications - Consumers are fascinated with high-calorie foods because they of their decadence. Consumers enjoy products that are symbolically the pinnacle of time, money, and effort. Corporations looking to attract consumers to their wares may consider making products using expensive textiles or imbuing them with a sense of extravagance.