If you were a paralyzed prisoner confined for life to a dark room with a single tiny window that looked out on a small patch of the prison grounds, as the decades passed you would come to treasure that tiny view. You would know every blade of grass; you would mark the change of weather; every detail would be of great significance, since it was your only view of the outside world.
But of course we all are trapped in our own bodies, and we only know what the tiny window of our senses shows us. It’s all we have, so it’s not surprising that it is important to us.
The "window of our senses" is misleading, however, since we to a large extent create what we see, using raw sensory data that is not directly available to us. So we have a potential second kind of attachment to the world — the attachment of the artist to his creation. (Why do some people exhibit this attachment ad others apparently not?) It’s not only our creation, it is our biggest creation, and we work on it constantly, and the quality of our craftmanship reflects our ability to know the world.