Agnes Callard at The Point:
There are many complex theories about the nature and function of art; I am going to propose a very simple one. My simple theory is also broad: it applies to narrative fiction broadly conceived, from epic poems to Greek tragedies to Shakespearean comedies to short stories to movies. It also applies to most pop songs, many lyric poems and some—though far from most—paintings, photographs and sculptures. My theory is that art is for seeing evil.
I am using the word “evil” to encompass the whole range of negative human experience, from being wronged, to doing wrong, to sheer bad luck. “Evil” in this sense includes: hunger, fear, injury, pain, anxiety, injustice, loss, catastrophe, misunderstanding, failure, betrayal, cruelty, boredom, frustration, loneliness, despair, downfall, annihilation.
more here.