Increased graphic intensity

[Maeka]

Human eye can't see above 24fps anyway.

That's a load of crock. I can easily tell the difference between 24 and 60 FPS.

Now, once you get past 60.... there's diminishing returns, until about 80 or so I can't really tell the difference, but some people claim they can.

Also, lower FPS = input lag. A game running at 24FPS vs a game running at 60FPS vs a game running at 100+ FPS, there's going to be a noticeable difference in the responsiveness of controls.