Lateinos said:
That said, when a movie adds something for seemingly no reason, it can be a bit disconcerting, but I try to give it a chance, even then. (Clockwork Orange does this apparently, although I've never read the book.)
Clockwork Orange misses something vital out though. Alex repents in the end. He rejoins society.
The film makes him succumb to his darker desires. That totally alters the entire story.
Fight Club also makes Tyler accept his alter-ego rather than struggle with it.
Eyes Wide Shut? Acceptance rather than struggle. That's indicative of the film audience rather than the basis of the books.
Citizen Kane? Struggle right to the end.
It's a better film, imho, because it doesn't take the comforting "heroic" way out. Charles Kane suffers due to his excesses, rather than revels in them - like Alex, Tyler or Bill Harford.
The Picture of Dorian Gray wouldn't be the masterpiece it is without Dorian's decline into madness. Same with
Frankenstein,
Gone with the Wind,
Bladerunner,
2001,
Dr Jekkyl and Mr Hyde...