Not quite sure why I write, but I guess the closest I can get to a reason is that it’s a compulsion or obsession: The overwhelming urge to organise and compile an idea into a cohesive narrative with a decent structure, dialogue and characters.
Also, after a good writing session I’m sure my brain gives me a nice hit of dopamine – somehow I feel calmer, brighter, and generally more content.
Writing makes me feel happy. Even if nobody read what I wrote I would continue to write. The pleasure I get from a well-turned phrase, line of dialogue, or paragraph of description is immeasurable.
For me personally, writing isn’t a hobby (although it can be that) but a way of life. Ten, twenty years from now, even if I never publish or self-publish another thing, I will still be writing.