I agree with Fitzgerald's negative view of the American Dream. If you look at the characters of the novel, they are all flawed. They have great wealth and every possible thing they want, but in the end, they are miserable. They cheat, lie, make money in unsavory ways, and even kill someone (even if it is an accident). Nothing good happens.
The point is well taken in our day and age, because we live in an age of wealth in America, but we are not any better. In fact, according to Andrew Delbanco, a professor at Columbia University there is a study that states that people are more depressed today and ever before in America. His book, The Real American Dream, is a worthwhile book to read. This begs the question - why?
If we have more than every before and achieved the "American Dream," then why are people miserable? Fitzgerald's negative view of this dream probably has merit.