^^^^
Just registered to say this. I cannot believe people are saying this non-sense about 30fps. If we're talking about a camera's refresh rate maybe, but not something like human reaction time.
Even 10-15 frames is faster than us. In the time it takes for you to reach the next button, press the same button or simply adjust the mouse or analog sticks, the game would have already refreshed several times. Just tell me you can press a button 10 or 15 times in a single second. It would be such a feet that it's pointless in a normal situation. Now try 20 or 30 times a second! Didn't think so. Your own finger would be visibly vibrating in a blur, almost creating a still image of its movement trail. The same logic goes for both digital and anolog directional movement.
Hell, some of the most laggy moments in gaming never gave me any un-responsiveness, in any genre. The character and the camera was doing my every bidding. It's more or less about the player's own ability to cope/pin-point what's going on at said framerate and how well the developers programmed the animations or mechanics. At this point, somewhere below 20fps is where confusion truly begins.
So yes, 60fps is still JUST an ADDITIONAL smoothness and ONLY amounts to the feel of the game's movements, their character, and NOT the availability of input responce time, no matter the game's pace. In no way can the human being be fast enough (and therefore the game's pace) for 30fps to cause trouble in comparison to 60fps. Really... "OMG! OMG! INPUT LAG! MEH CHARA IS NOT MOVIN UR FIGHTIN CUZ IT THIRDY FRAMES A SECOUND! I CAN MOVE NEAR TEH SPEED OF LIGHT!"
So, the truth?
It's none other than personal preference, and a very selfish one at that. So, yeah, 30fps is just passable or even choppy, just because it's not delivering movements quite as naked? A little too farfetched don't you think? 30fps is too fast to be considered "choppy" or "just passable" in a 3D game. It simply has its own feel. Games that run at 60fps require more animation data for realism than 30fps (robotic movement anyone? no?) and have half the console's assets at disposal to insert such data in. I bet frame rate whores would rather have all ps4/720 games be ps3/360 games that simply run at 60-100+fps over having a "horrid" constant 30fps with that "nasty" film-like feel of today (Killzone2/3, Gears and more).
I remember me and my brother worrying if Silent Hill 2 was going to follow the route of having a perfect 60fps, because it would NOT be scary with monsters walking about with the naked animations we've come to know from 60fps (arcade games/other). Even the PC versions cap the frame rate so that it doesn't trail off to a million frames. 30 frames = to adding film grain & overall realism, period. See, MGS2 looked amazing as still photography or a 24fps FMV on the internet, but with the demo in hand, we realized that the game lost the realism of movement when it started using 60fps for its gameplay. The illusion was shattered with all the nakedness. We didn't notice at first, as the outside rainy areas had a type of motion blur going on that smoothed the movements. Our impression dipped for MGS2's graphics somehow, even subconsciously. Luigi's Mansion impressed me much more overall. It's why I like MGS3's frame rate peak of 30fps.
Lastly, God of War 3 doesn't run at 60fps. Performance tests reveal more 40fps, which more or less resembles an upgraded 30fps without the additional 8 frames. It goes to 50fps+ at times, but mosly stays at 30-40fps+.