There are many reasons that I write. Here are a few:
It gives me the opportunity to put my feelings into words and then be able to release those feelings outwardly. Writing gives me a chance to express myself much easier through the written word.
I write to share my stories. What we go through often has the potential to help someone in the same situation. It gives those going through what we are going through or what we went through the knowledge to know they are not alone. It helps create understanding and empathy.
It exercises my brain. It gets me thinking and learning new things. I have have heard it helps with memory.