Comment by Sohcahtoa82

Regarding your first paragraph, the other thing worth mentioning is that in addition to smear/motion blur in film, it's also a passive medium. Video games are interactive. You're responding to and making decisions based on what you're seeing.

In a FPS, trying to track movement at only 24 fps is pretty much impossible unless your target's movement is entirely predictable.

In a flight simulator, trying to land a plane in gusty weather conditions is a lot harder with only 24 fps.

Lower framerates don't just make motion choppy, it increases latency. At 24 fps, any change in movement could be up to 42 ms behind. At 120 fps, that's down to 8.3 ms. And those numbers assume that you can notice the difference in only a single frame.

I'm convinced that people claiming 24 fps is fine for games just because it's fine for film don't actually play games. At least, nothing that requires quick reaction times.