Comment by taylorius
The lack of photorealistic fidelity gives your brain a bit of room to use imagination to fill in the blanks in your internal model. This fosters a certain type of engagement with the content that you don't get with photorealistic images.
I think that's part of the reason that a lot of indie games have converged around pixel art.
Obviously a large part of it is likely due to the fact that a lot of the creators grew up with the NES or SNES and just like that aesthetic, but I think you get a lot of "implied detail" when using pixel art, which is great when you're working on a limited budget.
This isn't to knock it, to be clear. I love good pixel art.