"I" should either be a feeling..someone's feeling that doesn't exist but yet continues.
I should be a negligible part of this universe which has the so called human intelligence with which I feel, think, talk and at times..write.
Whatever that be,
I write, because its good to read it later..to think how I felt at the time I was writing it.
I write because writings gets frozen up in time.
I write because, writings stay for ever, long after the writer perish.