The Great Gatsby - Facing death nearly alone

"'Look here, old sport, you've got to get somebody for me.  You've got to try hard.  I can't go through this alone." - Nick's idea of what Gatsby might have been thinking about his death, page 165.

What I believe to be the saddest part of this whole novel is the fact that absolutely no one came to Gatsby's funeral.  Even though during his life he upheld the impression that he had lots of friends because he threw parties all the time, no one seemed to feel that they should go to his funeral.  The only people that showed up were Nick, Gatsby's father, and the owl-eyed man.  This reinforces my idea that Gatsby can be considered a protagonist of the story.  People all around him gave him the impression that they wished to be his friend.  Even the people he did business with did not take the time out of their days to attend the funeral.  Basically, people only used him and his house.  Everyone seemed to want to be involved in his life for the sole fact that he was rich and could throw them great parties.  Daisy is a prime example.  She only wanted to be with him because he was rich.  Once he died, the so called love she had for Gatsby was gone and she seemed to just totally forget about everything they had.  She continued on with her life with no consideration to the man that just died.