Though it's a story without any "good" guys, in most any sense (one female character, who seems to represent possible redemption, is very marginal and gets coldly killed offscreen),
The Usual Suspects remains a transfixing and convoluted film noir thriller that forces the viewer to think through events, maybe watch the movie a second time, to see where the filmmakers and their narrative fooled you. It does paint a picture of a pretty violent world, though, and the degree to which there's any philosophy or morality at work comes from Verbal Klint, who observes that Keyser Soze succeeds because he's willing to go farther and be meaner than other gangsters, and that, moreover, he's like the devil, "whose greatest trick was convincing the world that he didn't exist."
The mythic Soze works his ruthless will through unwitting dupes and hirelings, always staying in the background -- not unlike Voldemort from the Harry Potter tales. Unlike Potter, though, profanity is so thick here you'd swear the ship blows up at the start because of the heavy concentration of f-bombs.