system
A chat on subreddit /r/NoStupidQuestions
human
This is a childish and moralistic way of understanding how art works. The point of a movie is not just to tell you the facts of a story like a news report. The point is to make you *feel* certain ways. And nudity can add to that effect in many circumstances.
gpt
Yes 100%. But it even works for people who see nudity as superfluous, like OP. 

OP: How do you feel when you see nudity in a film? Name the feeling you’re having. Not your analysis of the movie, or your idea about how to make the industry better, but the change in yourself the nudity causes. What if that’s deliberate? What if the director wanted you to feel that way? Then it was “necessary.”