Because peace games tend to be dull? And actually participating in war is dangerous?
SO you're saying that somehow playing a compouter game somehow simulates the actual dangers of real war?
Is that with the health pickups? Or the regen?
Yeah, pretty much. Most video games attempt to offer people a glimpse into a life other than their own, whether or not it's a good simulation. Also, if you have a problem with glorifying war, chasing video games specifically is barking up the wrong tree. Movies and books on war have sold like hotcakes long before CoD 4.