Why Did Nick Take Care of Gatsby's Funeral in the Book "The Great Gatsby"?

Nick's principal reason for attempting to arrange a large funeral for Gatsby in F. Scott Fitzgerald's novel "The Great Gatsby" is that he does not believe Gatsby should be alone. It also appears that nobody else seems concerned with handling the arrangements, or, in some cases, even attending the event. He describes his concern as needing to get somebody for the title character.

His efforts toward this end are largely unsuccessful, however. Even Gatsby's father, Henry C. Gatz, and his close business associate, Meyer Wolfshiem, seem uninterested in either assisting with the arrangements or even going to the funeral, although his father does, in fact, attend. Also in attendance are the minister, a few servants, Gatsby's mail carrier and Nick himself.

None of Gatsby's purported friends, including Tom, Daisy and Jordan, are in attendance. Nick comes to realize that their Western temperament was ill-suited to the East Coast, hinting at his own future return to the Midwest, where he hoped to find human morality and generosity of spirit still alive.

These events form the final chapter of the novel and, as such, reprise an earlier theme: that of the injustice of the so-called American dream. They also show Nick's character as having developed into one of principles and ethics.