There is so much negativity about the story line - that it is boring, "it's all been done before," but if people of Earth are tired of love, loyalty and sick of the sacrifice of self for something worthy and wonderful, then they need to stay here on this planet and leave Pandora and the Navi people alone. Love and Truth are universal. Sadly, so is greed. Avatar teaches us the same lessons that we continually refuse to learn. The movie is a must see.