Every writer has a different reason for writing.
Some write from a place of pain, and their writing is both healing to themselves and a message to the world about true hurts.
Some write from a place of joy, wanting to share the positive experiences that tie all humans together.
Some write because they have a message to deliver, a cause they want others to support, or a lesson they want others to learn.
Some write to explore the inner workings of their own minds, or to help others explore theirs.
Some write just to tell a good story.
All of these are equally valid reasons for writing. And there are probably many more reasons that people write, and every reason is valid and important.
If you’ve experienced darkness and evil in this world, and you write to cleanse your inner demons and show light to others who have similarly suffered, don’t let anyone tell you that your writing is wrong or too dark or shouldn’t be written about.
If you’re passionate about a cause or a belief and you write to let others know the value of something they may have never heard of or experienced before, don’t let anyone tell you that you’re being too preachy or that your topic shouldn’t be written about.
If you just want to tell a fun story, full of fictional people and events that never happened, don’t let anyone tell you that your writing is pointless or is silly fluff that shouldn’t be written about.
All writing has a place, all writing matters. If your audience is the world, if your audience is just you, it matters.
Go write your story.