It's not super important but it IS important. The most important thing in a video game is gameplay, one thing that significantly effects gameplay is frame rate. If a game is choppy and fluctuates at a low frame rate it doesn't matter how good the mechanics/sound/graphics etc are, your experience is ruined. It's the same for online multiplayer network code. Look at BF4, fantastic gameplay, graphics, sound etc, but the play-ability was ruined by poor network code.
Frame rate is one of those things that directly effects your experience.
Having said that, it also depends on the genre. Most RPG/Action/Adventure games run fine at 30FPS (although higher is always better). First Person Shooters and racing games on the other hand benefit significantly from 60FPS vs 30FPS.
In response to the OT, the reason PC gamers bang on about 60FPS/4K gaming etc is because it's one of the few things they CAN bang on about. Don't get me wrong, I am a PC gamer myself, but every 'side' typically finds something trivial to stand behind. With PC gamers its 60FPS/4K, with PS4 owners it's resolution, with XB1 gamers it's XBL, with Wii gamers it's Nintendo exclusives etc. At the end of the day I find it all very boring and pointless and wish developers would sometimes ignore the petty technological complaints of gamers and focus on making good wholesome games.
XBL: NathObeaN | PSN: NathObeaN | Steam: NathObeaN
