Many people don't understand why I use nightvision.
But nightvision has so many advantages.
1)Easily distinguish players from surroundings
2)Weapons, rifles, sticking out behind a box or door will be more obvious
3)Cost only a thousand or so of your initial 5000 (have enough for ak or m4)
4)Turning on and off nightvision will make your enemy think you are not smart
5)Completely flared screen if a flashbang blows up in your face
Nonetheless, I recommend nightvision for all maps. Not on 100% of the time of course.