CaptainWacky said:
What was the evolutionary puprose of death, again?
Death is meaningless, because the propogation of a species depends on its
life.
There is no environment on Earth in which only immortal species survive.
Death kills off those who are... well, weaker in the environment they inhabit, compared to those that possess traits more useful. Imagine if a blade of grass was born which couldn't properly absorb sunlight. It would thrive in darkness, but would only impede the well-being of grass more suited towards living in the sun.
Death can be said to be a sort of garbage cleaner. It's not nice to hear, but it's the truth. It's a revolting notion, eugenics, people dying because of something they can't control. It's nature, and we humans seem to value life... because it is evolutionarily beneficial.
We care about others. We judge ourselves by how much we can help our brothers and sisters, and that's why we are a pack of wolves, and not a hive of ants, where a single drone is meaningless towards some greater good.
To sum it up, a
species can survive death because it occurs on an individual scale. Only when it hits an entire species (And once again, uses their weaknesses against them) does it become a significant factor.
We simply aren't meant to be immortal. The weaker die while the strong live. Without this concept, we simply would not exist, because we slew the old apes who were not smart enough to fight us off, or outlast us in cold winter or devastating drought.