Emotional disfunction...

Crashhhh!!!! A hit and run and then a woman who was a lover becomes a death person. Like a cold water shower, you suddenly wake up. You might want to continue reading the book, the end is a shock. I can not lie and say I would have loved a happily ever after story, but let us remember that the books is not a simple love story, but could be consider the reflection of a society, a society who lived a tough time. Fitzgerald never went to the war, but was close to go. He probably knew plenty of soldiers who were not as fortunate as he was. 

In another hand, the fact that Gatsby fails to end up with the love of his life, is a way of saying that it is sort of impossible to disconnect and completely ignore your past. There is a very strong bond between Daisy and Gatsby, yet their social context is different and is a huge barrier which prevents them from being together. 

The marvelous thing about interpretation is that it is personal, so think for your selves, what does Gatsby represent, and the fact he failed to accomplished his life goal; Daisy. 

Green light...

References

Fitzgerald, F. Scott. "The Great Gatsby" Scribner. NY, USA. 1925.