Tons of societies worship their ancestors. It's common as dirt when it comes to belief systems. Most others still build in some kind of respect for those that came before. But when you think about it, it doesn't make a whole lot of sense. I mean, you're better than your ancestors. More advanced, smarter, why should you worship them? In something that I right soon, I'm going to explore the idea of a society that worships their descendants - specifically, the culmination of the human race to which they will eventually give birth. Rather than worship a creator, they worship a creation that will eventually come to pass.
An interesting variation on this is the idea of a circular god. It states that this end point of creation will eventually go back and create the universe in the first place. In short, we are the product of our own ingenuity. Eventually, we will evolve to the point where we can create ourselves. It ensures that life goes on indefinitely - in a way.
Jonah deserves some credit for this random train of thought, since it was my pondering of his incredibly bizarre universal soul theory that led me to come up with it. I will post that intriguing theory here if he says its ok.