Theory of never-ending life is something like you won't die. It's like you're like a vampire like Count Dracula who won't die for eternity unless expose to sunlight. Or you're like a Chevalier in the Blood+ anime wherein you will live a near-eternal life unless the blood of Diva or Saya will enter into your blood. Or you're the bount in one of the season in Bleach anime but you will still die if you're doll is much powerful than you. Despite the fact of the presence of theories about near-eternal life, we can still conclude that it's still has a flaw. But can we really get eternal life. The answer is yes, and that is through believing in Jesus Christ. He's the eternal life. But I would like to negate on the topic a little and I would like to clarify whether or not life is like a cycle or life moves straight forward. The near-eternal life would say that life is a cycle. Everything repeats itself. What had happened before will happen in the future. But, I would say in an eternal life, life moves straight forward and never go back. It depends on what we believe. Is it our life will be like a wheel, sometimes we are up and sometimes we are down. Or life moves on. Past is past, we must leave the past but still remember it and move on straight forward. For me, I would say, life moves straight forward.