Umm, OK, James…
“It’s called art” was James Cameron’s response to a recent Vanity Fair interview question asking the director why Rose couldn’t make room for Jack on the door.
And the answer is very simple because it says on page 147 [of the script] that Jack dies. Very simple. . . . Obviously, it was an artistic choice, the thing was just big enough to hold her, and not big enough to hold him . . . I think it’s all kind of silly, really, that we’re having this discussion 20 years later. But it does show that the film was effective in making Jack so endearing to the audience that it hurts them to see him die. Had he lived, the ending of the film would have been meaningless. . . . The film is about death and separation; he had to die. So whether it was that, or whether a smoke stack fell on him, he was going down. It’s called art, things happen for artistic reasons, not for physics reasons.
“It’s called art” is how I respond to anyone questioning anything I do, too, James! In the interview, Cameron also talks about how Titanic ending up with a PG-13 rating in spite of the nudity and violence and that one time he almost punched Harvey Weinstein. Read it in full here.