In my opinion, this cannot be justified by logical means, because if you can eat someone else's meat, then someone else can eat your meat, therefore nothing prevents cannibalism. If you accept the point of view of a meat-eater, then you should not be indignant that someone ate your child.
ONLY GOD IS TO BE WORSHIPED. Luke 4:8
The "Christian" is to be judged by the content of the "Books"....i.e., the Book of Life and the Holy Scriptures wherein lies the oracles of the "perfect law of liberty" (James 2:1-2, John 12:48, Romans 2:5-6, Rev. 20:12)
Within the pages of Scripture we can read where we are to emulate the "mind of Christ", Phil 2:5, "...Let this mind be in you which was also in Christ Jesus."
The Christ had no problem with eating the meat of lower life forms in Luke 24:42-43 we find Jesus eating broiled FISH.......and in Luke 22:7-8, we find Jesus instructing His disciples to make ready the Passover meal/sacrifice (the eating of Lamb).
What? There is no passage of Scripture where Jesus ate a Cow.....so Cow is forbidden because the Christ did not consume it? Jesus did not ride in an automobile......so we can't ride in a car, train, plane, bus, etc.? Jesus was found entering the city on back of an Ass...so we are to ride only donkeys?
The New Testament of Christ Jesus makes it perfectly clear that killing and eating animals is perfectly acceptable to the God of Creation. In fact in 1 Tim. 4:1-4 the Holy Spirit (that inspired all the Holy Scriptures) foretold that SOME were going to depart from teaching the truth and were going to tell people to ABSTAIN FROM FOOD which God had given His blessing to consume via offering a thanksgiving for the food they were receiving from God by those who know THE TRUTH...i.e, the eating of meat is acceptable.
".........for EVERY CREATURE of God is good, and nothing is to be refused if it is offered with thanksgiving; for it is SANCTIFIED BY THE WORD OF GOD AND PRAYER." Good as in GOOD FOR FOOD.