ADS is cool if it has a purpose, most games its "you can't shoot yourself in the foot unless you ADS" which is stupid because it eliminates strategically shooting, and half of shooting.
The strategy being, sacrifice a bit of accuracy to kill him now rather than take a half second to look down the sights. Then there is targets at a distance and those who are close enough to melee ect. and in the melee case i hate the ADS systems forcing you to spray, much rather have a semblance of accuracy and shoot the person in the face.
Even being inaccurate during melee-range combat while using a rifle is a bit more realistic. Aiming the tip of a 1m long weapon at someone while they are in your face trying to kill you isn't exactly easy. It's one of the reasons SMGs are made, and in the situation you described, the stability of an SMG would be a big help.
I'm a PC user, and I don't hate ADS, but I do acknowledge the trend. To me they are two ways to approaching a game, and both can be done well.