I just play to the people I can see. So it's almost like you are playing to the first few rows of the crowd. You can see the faces of the first hundred people, but then it becomes a blur as the crowds disappear over the hill.
Playing gives me as much good feeling now as it did when I was a bitty kid.
I have never yet met a healthy person who worried very much about his health, or a really good person who worried much about his own soul.