It isn't that anyone should live forever. It's the fact that cancer is such a painful death. It is painful both during the process of it taking over(attacking/destroying) the bones and organs of the body as well as the final moments of it causing organs to slowly shut down. For example have you ever seen a person die of lung cancer? It is a very painful process. I watched someone go thru it firsthand and I certainly hope I do not go thru it - a ton of extended pain, even when the pain was 'managed' thru Morphine. If taking the argument that no one should live forever, then I assume you would support that no one should never go to a doctor .. starting off with the birthing process and leave it all to chance for the unborn and mother.