In some ways the food animals we eat are the most successful animals in history.
If we define the goal of any species is to successfully pass on genetic material to the next gen and to expand its number. Essentially that's the concept of natural selection. Cows by being useful to humans are able to pass on genetic material successfully. So from a cows point of view it's important that people drink milk and eat meat otherwise it's genetic line is wiped out.
If we don't eat meat that land will be used for farming so higher order animals won't replace the pigs cows and chickens and certainly not in the same number.
So the question comes down to Do pigs cows and chickens deserve to exist?
From the human standpoint if you assert we have the right to exist and our goals are still natural. Passing on genetic material and expansion then we should focus on sustainability which really leads you out of eating meat but it also eliminates all unnecessary energy consumption so from this point of view leisure travel and eating meat are likely equal.
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