I could just add easily day, "Just because you believe it, doesn't mean it's true." Or, "Just because what we see through Hubble appears to indicate this, doesn't mean it's so." I don't agree with your "what's the point of living" answer. There's is plenty to live for. However, I am not a materialist. I am a Christian. I believe that there is a Creator who is fully in control of everything, every atom, every particle in this universe. And, I leave all of "that stuff" in his capable hands. I'm not asking you to understand it believe that. But, I do take issue with Musk's "it's undisputed fact" statement that's based on what, a few decades of observation? We can't predict what the weather will be next week.