No, no you don't understand. The Ender Dragon is a metaphor for our irrational fear and willingness to attack anyone who enters out domain. It equates the Enderdragon's irrational fear of human beings to the point of attacking them to where the humans attack back to our irrational fear of the unknown that causes us to attack, in which the unknown fights back. Everything is real within the acceptance of the unknown, the Enderdragon teaches us that, everything is so clear now...