Why does a writer write?

"The glory of art is a false attractor. As a writer, I have struggled with this question: am I really driven to put down this story running in my head, or am I merely hoping to win recognition?"

Writing is a different way of talking and talking is a man´s need.
Since the first hic up to the last gasp we all have a need: to know that we are not alone.
That leads to the biggest need of humanity, the one that comes directly after the need to eat, that is to Communicate.
Communication is our struggle and our despair.

So, why does a writer write?
He writes because he has the need to, he likes to and that is his way to communicate.
Good or bad, what matters?