One of the primary themes of Fight Club is the crisis of masculinity. The narrator, who remains unnamed throughout the film, is a white-collar worker suffering from insomnia and a sense of purposelessness. He feels emasculated by modern society, which he perceives as having stripped men of their traditional roles and identities. Tyler Durden, with his charismatic presence and rejection of modern values, becomes a symbol of the masculine ideal that the narrator and other men aspire to.