Isn't it obvious? The space marine/army boy gig is getting OLD. There's only so many times I can pretend to be in the army before I barf, or die of boredom.
Plus, realistic dying isn't always fun. Realism isn't always fun. Games were never supposed to be about ultra realism...
Tactical Shooters are fun in their own right, but I don't think ALL FPS games should become 'Modern Warfare' clones/replicas... the action is slow paced and requires too much thinking sometimes, you just want a doom/quake/duke nukem romp of blasting people away every 5 seconds.
Think about it I mean.. 10 years from now is Call of Duty 13 really going to be any different from Call of Duty 1-5? You're going to be running around dodging bullets and shooting tanks... at least halo had aliens/alien weapons/spaceships to make things interesting/use your imagination however don't even get me started on halo/gears of war ranting... and now I think I've used enough backslashes for one post so I'm ending it here.