I know that some games want to bring emotion, and some have done it well :
Ico, Metal Gear Solid 1 , Shadow of colossus, Final Fantasy ,Mass Effect (scene where you must choose what friend will sacrifice to save human race) etc ...

FPS war game, must do big action and scenes, it's their main job, including emotion why not ?
If they let Multiplayer to be Fun , no problem.

Totally Personnaly :
I have enough emotions on the life ( internal wars at job etc ...) , if i play an FPS i wait for lot more action than emotion , sure