Just wanted to back up Dslyecxi:
Those who are against zoom because "eyes don't zoom" either missed the point or don't understand it.
- Our eyes don't "see", our brains do.
- This about perception, not just optics.
- Because computer monitors can't replicate the optics of our eyes, the perception can be "off", in-game. (e.g., things seem farther away than they would in real life)
- Having an optional, temporary zoom helps to compensate for the limitations of screens to more closely mtch our perception when our brains are "focusing" on long distances.
That's why many games and simulators have an ironsight zoom (Operation Flashpoint, if you want to talk about a "realistic game") Other games have used this feature well, with a good risk/reward: While zoomed you have less fov, aiming speed, and range of motion.
Dslyecxi does an excellent job trying to explain this in previous posts so I'll leave it there.