I agree it's a silly choice. Humans are omnivores. If we were destined to eat only plants, we'd been born as cows.
Meat contains loads of important nutrients. It's just weird to do things the hard way with special foods and dietary supplements etc. instead of simply eating some meat, eggs and dairy products.
It is a choice, yes. And everyone should be allowed to make that choice. But scientifically it's a weird choice.
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