One of the advantages of being a writer is that they can't put you in solitary confinement. Wherever they put me, my whole cast of characters comes too.
When you talk to God, it's called praying.
When God talks to you, it's called paranoid schizophrenia.
When a headful of imaginary people talk to you, it's called being a fiction writer.
So I'm a writer because the voices tell me so. Which is a bit worrying, now I come to think of it.