I need 0 fps in my games, they are a luxury. Having >60 framerates just makes the the playing experience cleaner and more enjoyable. Enjoyable in the sense that when you have 120 fps, you never notice your framerate at all.
Criticizing people for wanting high fps is like criticizing people for buying music you don't like, the value is clearly subjective and will vary from person to person. Likewise people don't all perceive fps the same way.