Finishing The Ring

What is the moral of the ring?  Gotterdammerung manages to clear up all the odds and ends of plot while not clearly closing off the meaning, which is great and leaves much food for thought.  Although it seems to me that if you are beset by three ladies on the road giving you advice in chorus, three being the magic number, you had better listen.  

I'm hooked--I am already thinking about the next one.  I was disappointed not to have brought my camera to take a photo of us all out celebrating afterwards.