'This thing is good, because it's good, but this exactly same thing is bad because I said so, even if there's no difference between the two'
Okay, then.
I'll just give some examples, mostly from the games that have already been mentioned in this thread.
FO3's and Skyrim's visuals were carefully curated to emulate the look of Adam Adamowicz's art, as noted before me. The green/brown palette reflects the ecological catastrophe, tint changes based on your location to enhance the visual language (red in Pitt to reflect the glow and heat of steelworks, blue in Ancorage to make the thing feel colder, etc.)
RE5's color correction is the way it is as a homage to Black Hawk Down, changing between the levels from yellow to green to red.
Far Cry 2 tries the same, conveying visuals similar to The Blood Diamond and looks like plastic garbage instead of dusty savannah with its filters off. Far Cry 3, on the other hand, uses its postprocessing to enhance the green jungle and blue ocean, making the image more saturated than it really is, thus, achieving the feel of 'tropical paradise'.
Payday looks like that because it emulates Heat.
Terminator Resistance and Aliens: Colonial marines occasionally use blue filters to make their visuals closer to James Cameron's movies.
San Andreas uses filters to look like certain mid-90s hip-hop music videos and Menace 2 Society, also changing its color grading based on the location, thus providing different feel and atmosphere to different regions.
Alien: Isolation and CP'77 use chromatic aberration to maintain a certain 'retro' look and feel, which is directly connected to their retrofuturistic art-direction.
The Trine series has always used heavy post-processing and LUTs to make their environments more bright and vibrant, but still easy on the eyes, sometimes reducing them to soft pastels, and sometimes making them high-contrast within the same level, based on the scene, and those are some of the most gorgeous games out there.
And, finally, The Gothic Remake uses desaturated colors the same way desaturated colors are used in, say, Children of Men.
The list goes on and on. You're just either too stupid and parrot something you've heard from a random guy on YouTube, outright blind, or just hate videogames and are extremely biased against them.