In The Great Gatsby, money makes the world go 'round—or at least gets you moving in the right direction. It can buy you yellow Rolls-Royces, "gas blue" dresses, and really nice shirts, but in the end it can't buy you happiness. Or class. It does, however, buy you the privilege of living in the world without consequences, leaving a trail of bodies halfway from Chicago to New York. But being poor isn't exactly the moral choice, either. So, where does that leave us? In the middle class?
Although Fitzgerald shows rich people as careless and selfish, ultimately all of the characters in the book show themselves to be disloyal. Bad character spans all classes.
The Great Gatsby demonstrates the emptiness and moral vacuum created by the decadence and wealth of capitalism.