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BafangFan t1_j4jxr88 wrote

I think the question should be "what would humans eat if everything was abundant?"

And it seems that answer was meat - since we ate so many large animals to extinction. Perhaps we eat more plant foods now because the availability of large animals has diminished.

This is evident in the seafood industry. We are eating fish lower on the food chain because we have already eaten almost all of the fish higher on the food chain.