Actually, the comparisons between simple and double framerate are not "true" one factor at a time comparisons because the motion blur is not the same (linked to the camera shutter).

I love watching 48/50/60 FPS for psychedelic things or music visualization (and games of course ! like most of gamers) but it should be used carefully and intentionnally by the content director / producer. Some scene/content would require high motion blur and some others scene/content high framerate...