You realize that once you are dead it makes no difference how long you were alive right? When you are dead there is no inherent regret that you didn't live longer. Whether you were 67 or 3, you're still dead--the end result is the same. No one life is more valuable than the next. Think about that before you make any more short sighted comments.
I know you're speaking philosophically, but that's not true in every context like a wrongful death lawsuit. The younger you are, the more your life is worth. The higher your earnings bracket, the more your life is worth.