Why do so many people seek a ”gym body” by way of a potion or pill?

Just about everywhere I look there is someone or some company advertizing you can shed X amount of pounds in X amount of weeks, usually very few, with out having to give up the foods you like, aka you don’t have to eat better, or do any exercise. Are we Yanks that lazy we don’t even want to attempt any kind of eating and exercising regiment to look slender and toned? Regardless of what is said, the reason these companies hawk their goods so hard is many Americans want to look thin but just don’t to work for it, so they spend billions a year on this snake oil and hyped up promises. Why are so many Americans trying to take a short cut rather than finding a way to do it correctly which works more than it doesn’t?