It's a phase. In the late 80's and early 90's, it was Platformers, in the mid-90's it was fighting games and RPGs, and now it's FPS games.
Part of the magic of Goldeneye, and even Halo and Halo 2, were that a) they were fantastic games and b) that the genre wasn't totally oversaturated. I love playing the occasional shooter, but I'm kinda getting sick of them at the moment.