Well not only do we worship life on earth. We also worship the moon goddess. And the sun god. Well those are nature as well. Nature expands far beyond earth. The mother earth, space, stars, planets they are all connected in the circle of life. Earth being the only planet with life.....as far as we know. But that fact alone makes us forget about other planets. But without our moon and our sun we would not exist. So we worship ALL things.