If I had to find a way to encapsulate not only why writing matters, but why we need to be open and courageous in writing, this poem would do nicely.
Imagine a person taken out of his room, and without preparation or transition placed on the heights of a great mountain range. He would feel an unparalleled insecurity, an almost annihilating abandonment to the nameless. He would feel he was falling into outer space or shattering into a thousand pieces. What enormous lie would his brain concoct in order to give meaning to this and validate his senses? In such a way do all measures and distances change for the one who realizes his solitude. These changes are often sudden and, as with the person on the mountain peak, bring strange feelings and fantasies that are almost unbearable. But it is necessary for us to experience that too. We must accept our reality in all its immensity. Everything, even the unheard of, must be possible within it. This is, in the end, the only kind of courage that is required of us: the courage to meet the strangest, most awesome, and most inexplicable of phenomena.
Rainer Maria Rilke