To 1.: Cells reproducing themselves DID happen by chance! Earth origined billions of years ago. The cells had time to origin by chance.
Btw. cells don't reproduce themselves with THAT accuracy. They envolve. If The new cell can reproduce itself better than the old one, it survived, while the old one may die out.

To 2.: This is explained by this: http://en.wikipedia.org/wiki/Anthropic_principle

To 3.: dito

To 4.: Morality is made by humans. There does not exist a consistent definition of moratlity. Animals do not have morality. It makes sense for evolution and selection that some animals are killing each other. The strongest survives and shares its genetic material.

But as far as I understood the religious point of view, a consitent moraltity exists: the moraltity of god. (although humans can decide themselves) If god creates animals that are killing each other, he of course can be blamed by that!

5.: Death in science means just that you don't live anymore. That's it. In science there is no afterlife. So don't waste your life for an afterlife that likely does net even exist.