The difference between 30 FPS and 60 FPS is not that big for me in video games, it's just about yourself thinking it's worth it or not.
Personnally, 60 FPS is very good for some slow motion action and cinematics in video games, as it is in sports. I always loved slow motion sequences in sports, particularly swimming and tennis. Of course, it's very weird to watch a slow-mo sequence in soccer where a player is hurt badly, as you can watch it completely (already happened to me. Erf, so hard to watch somebody getting hurt over and over...).
Anyway, YT allows very few videos to be played in more than 30 FPS because it would way harder to handle for them, I guess. For now...