You write because

You write not just because somebody else can read it

You write because you don't have somebody for you now

You write because you can't say it face to face to anyone

You write because you don't have anyone to say it face to face

You write because you're not sure anymore who would care to listen

You write because you're tired

You write because you don't have enough courage to literally shout it

You write because deep down you're hurt