Call me a jew who sees thing a bit too late... But that stupid hedgehog tries to take on the role of god. He gave life to mankind, and then he takes it away. Perhaps he had done so to every Planet with life in it. So perhaps in the Chrono universe only "living" Planets can have Life-Forms? And Lavoids are drawn to these, give power to the mightiest race and then destroy the Planet? Beacuse I think Zeal could of been Lavos' greatest moment and also the essence of his downfall. Had he not messed with the Zeal royal family and Gurus, Crono and his gang would of never recieved the gifts the were given by the three: The Rainbow, Epoch, Masamune, the Time Egg and much much more. The Pendent would of never reached Marle, and thus never would the CT journey begin. He tried to make a people of his own ,much like God with the Jews, but like all the jerks who tried to be God, he bit the dust.
Anyway, back to buisness. If Lavoids journied to "living Planets", one could say that they are the essence of all life. Though he would be wrong. On the contrary, Lavos is a poison to the Planet, a destructive force of life. Then maybe Starky (Who is amusingly enough an adavance scout for an alien race out to destroy Earth) thought of it in the wrong way? A universel, but still oddly Human point of view?