There's no need to 'carefully craft a fun metric', if you're honest to yourself you'll notice that plant-based nutrition is the only sustainable way to feed billions of humans on this planet. But I'm curious, which micro- & macronutrients do you think are only available from meat and cheese?
> if you're honest to yourself you'll notice that plant-based nutrition is the only sustainable way to feed billions of humans on this planet
If you're honest to yourself, you'll notice that plant-based nutrition is not a sustainable way to feed billions of humans on this planet, because those billions of people would rather destroy the world than have some vegans enforce their morality on them while enjoying a lifestyle that consumes orders of magnitude more energy than some third world subsistence farmer's chickens.