In a way song writing can almost be detrimental because suddenly you find an outlet that is a kind of cheating. You don't need to have direct communication. You can say 'I can't describe it to you but I will record it and send it to you.'
As a writer or as a filmmaker you have to present yourself and part of what yourself is is what you're interested in or what you think is funny or what you think is sad or what you think is horrible.