George Carlin Wisdom

I remember that George Carlin once said in one of his comedy routines, something like: "I know the meaning of life is that I'm here to help others. What I want to know is what are the others here for?" This makes me laugh, but it is also somewhat profound. I am interested in what other people believe the meaning of life is. What is the actual MEANING, as opposed to platitudes like "we're here to help others." Because helping others can never be an end in itself. Since if there were no other people, then what would the meaning of your life be? Is it contingent on having other people around? What if you are a total invalid, or institutionalized, and have no friends or family, and no capability to even help others? What is the meaning of your life then? I hope some people will comment on this! Because I am really interested. Thanks!!