If you want to look strictly at the gameplay aspect, yes I agree, it's mindless shooting to the core. But if every shooter game were the exact same, wouldn't we eventually get very very bored? I mentioned earlier (in another post on here) that I love playing the campaigns, be it for any decent shooter. The things I love in a shooter campaign are the setting, the story, the events and updated missions happening in game. I might be missing a few points off the bat, but those are the main points.