Thank you for writing again, and we see that there are several more emails to follow.
Sacrifice, killing, and war are all part of the sinful nature of human beings, and are not part of God's creation or heavenly intent. Humans killing and eating animals is also part of the human fallen nature. All of the things that you cited are conditions where humans have turned away from God will, and acted on their own.
As a side note, a friend of ours lives in Queretaro, and has a couple of deer refuges. Please take a look at the web site we host for him and see the beautiful videos he made.
In the Love of the Lord,
Frank and Mary