The Earth was cursed, because of Man's sin. God took the life of the first animal to cover Man's sin. Man did not eat meat until the days of Noah. Then The command was given to eat animals as food and the fear of man would be in all life. Read Genesis. Don't want this to become a Religious site, but is what the Good Book says. The taking of life, to give life,,is a reminder to us that, something has to die, for somehting else to live. Hence the command to the Children of Israel, for all their animal sacrifices. Each time I harvest a deer, I am reminded GOD had to send an ultimate sacrfice to die for me. Why hunting is a spiritual experience,,for me anyway.