The ultimate wisdom of enlightenment, whatever it is, cannot be a matter of having fleeting experiences. The goal of meditation is to uncover a form of well-being that is inherent to the nature of our minds. It must, therefore, be available in the context of ordinary sights, sounds, sensations, and even thoughts. Peak experiences are fine, but real freedom must be coincident with normal waking life.
Not only a great discussion on the purpose and practice of meditation, there are some links to really good resources for further investigation.