The important thing is to do what you most love in the best way. If you love literature, you could be a great writer and perhaps one day become a Nobel Prize Laureate for Literature.
David O. Russell is probably my favorite filmmaker. He's not only a great director, but he's also a great writer.
My dad was an editor and a writer, and that's really where I would have liked to have gone. But the genetic link was not intact there, so I wound up going into business. But I love to write, still. I'm not a great writer, but I enjoy it.
You know, that's kind of the thing, I can't freestyle and I used to always wonder why I couldn't, and when I would try once out of every six months, but I was always a great writer!
That's why Tennessee Williams was a great writer. Poetically, dramatically, it was fantastic stuff. And with the landscape, the losers in life populating it. His short stories have got rhythm, something musical about them.
I'm not a great writer of literature. I'm an entertainer.
As for Tenacious D, of course it could work as a full length movie; all it requires is a great writer and great director with an ability to think outside of conventional film comedy.
My dad is a great writer. Naturally talented, naturally charming. He embodies that back-in-the-day cool.