I know we are in a sociology class but the materialism aspect reminds a lot of Maslow’s hierarchy of Needs. Even though it’s more focused on the individual than society. But according research it is nearly impossible to be completely content. Just like you were saying Maslow’s starts off with basic needs just as food, water, shelter, and then it moves on to safety and security. Eventually once you have those needs met…. you move on to materialism aka self-fulfillment needs. For example you get something like an apple watch … the satisfaction only last for so long before you have the urge to want something else, something newer, something “better”. which you could view as a bad thing, and call it depressing. But, like you said with out that want and drive society would not continue to grow.