I don't know if I would say it's just because people are used to it. 24 fps is highly stylized. Movies are shot in 24 fps, wide aspect ratio (often much wider than 16:9), heavily color graded and often have film grain applied to them. It makes them feel quite distinct from normal digital video.
I'd argue it is color grading and wide aspect ratio more than anything that makes movies feel like movies, but 24 FPS and it's less lifelike movement also does make them feel distinct.
On the other hand, no one argues that sports look a lot better in 60 FPS. For home movies I take, I also want at least 60 FPS, because it preserves reality better.
I'd argue it is color grading and wide aspect ratio more than anything that makes movies feel like movies, but 24 FPS and it's less lifelike movement also does make them feel distinct.
On the other hand, no one argues that sports look a lot better in 60 FPS. For home movies I take, I also want at least 60 FPS, because it preserves reality better.
But movies aren't about preserving reality.