Human or any other life. Life was expendable just as it has to be in a nature without order or morality. The Great Walls and the Pyramids of antiquity are all mass graveyards. The religion of these death-centered societies was, naturally, the Earth Religion which comes down to us today as worship of Gaia. This is not a religion of life.
Nature is in fact quite deadly.
The Earth Religion is the religion of death. Without an orderliness, a lawfulness to the universe, death must become our final inquisitor. Throughout history, morality presents the alternative to worshipping Mother Earth. The values associated with morality and natural law have arisen over and over and mark the departure of cultures world-wide from barbarity towards civilization. And, when morality is in decline, barbarity is inevitably on the rise.