Though I think 3D sights look "cooler", the current sighting system is more realistic. 3D sights are really annoying at times because when you look through them you have to somehow spot your enemy through a tiny peep hole or something similar. In real life your eyes focus on the target or forward sights -- not on the rear sight. Thus, the back sights look blurred and you can see "through" them to the target. with 3D sights, it's as if your guy is staring at the gun, which makes no sense at all.