Here's the suggestion made by Rothman;
"It’s a familiar wish—we all want to be loved perfectly and forever—and it makes for a great story; there’s something admirable in it, and, along with Nick, you wonder whether a Great Romance might complete your life".
Step-by-step explanation:
He tries to liken the characters portrayed in the Great Gatsby to real life. For example, Gatsby desire for love is one that is shared by many today who wish to love and to be loved.
Thus, the story captivates the interests of so many readers as it portrays the love fantasies of Gatsby.