I think there is a piece of history you're missing here, so allow me to try and fill it in.

If you google 60fps vs 24fps you'll find endless threads of people asking what the difference is. Most people will tell you that 24fps has been the standard since the 20s, but there is little explanation as to why.

If we actually look back to the creation of film will notice that 24fps has not always been the standard. Edison himself originally recommended 48 fps stating "anything less will strain the eye." Edison films, however, did not follow this standard, nor did they seem to be standardized at all (with single films having a variation of larger than 10fps over the course of the film). American Mutoscope, one of Edison's rivals, actually used 40fps, but the resulting camera weighed almost a ton.

However, these fast paced filmed used up too much film (a luxury at the time) and by Victor Milner's time the standard was 16 fps. More than practical considerations, many film buffs actually critiqued films faster than 16fps as being "too fast." The Birth of a Nation, for example, got as slow as 12fps in some sections.

The major problem with the period between 1910 and 1920, was that film speed varied so much. Even for a single filmographer their frame rates tended to vary between films. By the mid 20s, camera men had started to pride themselves on their even speed and being able to approximate 16fps (which they more usually measured in feet of film). Meanwhile, theaters had started demanding faster and faster speeds. While 16 fps may have looked more professional, in a crowed theater (or a small one), the audience seemed more able to decern the film at 24 frames per second.

When Annapolis was shot in 1928, the studio was mandating 24 frames per second. While many film crews did not appreciate the more frequent camera reloads (16 frames per second corresponds to about 1,000 ft in 16 minutes). By the time motorized cameras became common, 24 frames had become a de facto standard.

Its important to note, this was not a technical limitation, nor was it (frequently) a financial one. It was the end result of two opposing forces (camera crews and actors vs studios and theaters) desiring a different speed.

So Why not 60?

It's worth noting that many TVs (eg NTSC) use 59.94 frames per second (60 Hz/1.001) counting interlacing. If you discount interlacing it's 29.97 fps. This has to do with how the interlacing is actually implemented (specifically, to remove beating based on 60hz power sources found in the US). Originally they chose 60fps to match the power source, but this actually causes intermodulation (beating), which appears as flickering.

There is some evidence to suggest that human visual acuity drops off sharply after about 30 frames per second, though most human beings can still detect discontinuities in the motion illusion up to 60-75 frames per second. What's more there is a large library of evidence that the human eye can detect jitter over 300 frames per second (Steinmetz 1996). So it a decent question to ask, why not 60? 60fps itself is an artifact of different technology (Television using 30 Frames per second and interlacing frames).

Ok, so we were forced into 60fps, why keep our 24 fps standard?

When making home movies first became a possible consideration (read VCR camcorders, my father had one for years, the thing actually took a VCR tape and wrote to it), they were optimized for TV production (ie. 60fps). As a result home movies had a vastly superior frame rate to standard film. Unfortunately, this quickly became associated with amateur production (which most home movies were). Consider movies which feature film shot on a hand held camera. Most people can instantly discern the much faster rate, but more surprisingly is that most people will tell you it looks lower quality.

The truth is, we think of 24fps as looking better because we've been trained to.

A number of Directors have tried to break away from 24fps (Peter Jackson shooting at 48, James Cameron at 60), but almost always they are forced to show these movies at the old standard. People just think it looks better. Film speed (like many things) is a social phenomena.