"Why would anyone want to mindlessly bash four buttons at the rhythm of some music?"

[Flks]

Today, during a boring English class, some other student started chatting with me, and at some point he asked what kind of games I play. I impulsively blurted out that I play FFR, even though it was obviously not the kind of game he was referring to. He hadn't a clue what FFR, Stepmania, DDR or Guitar Hero was, so I tried explaining the game; I said something along the lines of it being about pressing the arrow keys at the right moment in accordance with the music. I don't think you really have to read the thread title to figure how he replied. I had no idea what to say, and you can probably guess how lifeless he now thinks I am. I am actually quite lifeless, but that's not the point.

How would you react in a situation like this? Or in other words: what's so good about FFR?