In a state of nature, most deaths are violent, painful, or agonizing. The most common modes of demise are being killed and eaten or starving to death. It is the constant struggle for survival perceived by Charles Darwin. Some 99 percent of extinctions that have occurred on this planet occurred before human beings existed. The environment does not preserve species or habitat.
Civilization is artificial.
The artificial institution of law helps to channel human predatory instincts to more humane purposes. One does not have to watch too many nature documentaries before it becomes clear that theft, assault, rape, and murder are common behaviors in the animal kingdom. Nature has no law respecting property. The strong dispossess the weak. Abandonment, exile, and death are the fate of those who cannot compete in the Darwinian struggle.