You know what else isn't in real life? Seeing a man sized target at 100 meters as less than 1 cm in your field of vision. If human eyes were as poor as computer monitors you'd be practically invulnerable to any non-scoped enemy fire over 150 meters.
HUH?!
SOme people still don't understand. By having a fixed FOV you indeed end up not seeing infantry past 100m (however, I could spot them to greater distance on my rig/config), but this is not you in that game. It is a virtual soldier and every soldier will see the same. It will reduce figthing distance, but only for those that think games should be a 1:1 copy of the real world. Look at WW20. No FOV change, no complaints. And as I said in another thread, fighting over 300m was common, because everyone had the same scale on-screen.
As a shooter you will learn alot about biology, biomechanics and anatomy. When the human eye suffers from insufficient oxygen it will "show" a "screenshot" of the scene. You pretty much see a copy of what was going on until you take a deep breath, close your eyes for some seconds and try again. The eye starts to copy the image after a few seconds, in a controlled environment after 7 seconds, but under stress faster.
So this whole "to zoom" or "not to zoom" discussion is just people that want the real eye sight in-game but only the pros and not the cons. And there are a lot of cons...for example being blinded by the muzzleflash playing Barracks, eye trauma after close artillery/grenade impacts, dust/debris on the eye after an impact next/infront of you, slow focus in stress situations, focus in general (only the front sight is in focus, the scene/target out of focus, and yes, you can shift the focus, but a serious shooter better watches for signs of canting/misalignment) or if he prefers to focus the target suffers medium range accuracy by several centimeters...
I could continue, but I guess you guys just want the good things to play with but not the bad things. So the easiest way to scrap that pro/con issue is to fix the FOV, have everything in focus but reducing the visual aquvisision range, which won't impact gameplay because the max visual range is 300m at best. Realistic? No, but already in-game...