The series, and even the genre to a point, just feels stale these days. If you want a FPS, walk into any game store and look at 50% of the shelves and take your pick. Modern Warfare specifically just seems to be lacking to me anymore.
The campaigns are just useless anymore: almost identical stories and just get shorter and shorter, almost as though they are simply training for the multiplayer.
Oh, the multiplayer... while most gamers proclaim MW multiplayer to be the best of the best in multiplayer games, having played it on and off for a couple years, I don't see it. It's repetative for one, and becomes pointless after you reach the max level. Yes, you can prestige (20+ times anymore) and basically start over, but it just means that you're going to spend another month killing people for the sake of experience to unlock better guns (that you already had).
I'm just tired of the boring, repetative games that have flooded our market. I miss the days of games that had story, that had characters I actually cared about, and that made me feel like I had actually accomplished something.