You may be able to do research and find out if humans are 'used to' looking at 24 fps and experience it as 'better' as a result, but I doubt that the human retina will respond in such an advanced manner to what it has seen before. It still prefers to see as true to life video as possible, which is why 1080p50 and 1080p60 are so popular and appreciated now.
As far as I know, the only reason 24 frames/sec was once established long ago was that it was the fastest they could reliably pull film through the projector gate. Before that, the limit was 18 fps, which looked like too much flicker to most human viewers.
If you ever need to publish for PAL video, you need to somehow convert 24 fps to 25 fps, which is a pain in the rear! I still don't believe that 24 fps somehow looks magically brilliant as opposed to 25 fps, which is also easier to multiply and use if you ever need Europe to back your product..
To my knowledge the only film - whether shot digitally or on physical film - that is being shot at higher than 24 fps in the United States is The Hobbit, which is being shot at 48 fps with the RED Epic. As for non-cinematic productions, you may very well be correct. I don't know.