> So on a plant-based diet you can't save yourself?

I'd generally go for keto since that is more studied compared to strict carnivore.

> Plant-based meals require far fewer resources and is cheaper, which means maintaining societal stability when resources are becoming low - as there is more to go around.

But your health will (probably/maybe) be worse. There are ways to make cheap keto (ex: eating 10 eggs/day in my local area).

> A lot of farm land is being used to grow foods for livestock. We could use that land to grow food for ourselves.

Then eat grass-fed meat. I do so myself.

>Then eat grass-fed meat. I do so myself.

I'm not sure there is enough grassland in the world for everyone to eat grass-fed meat.

I believe (not really studied myself, but as with most things in life, I only do enough research on how to choose who to believe, not really KNOW MYSELF, reality is so complex that I don't have enough time to really know, and even if I do have time, I'm often not genetically predisposed to be good at it, so I still dont decide for myself, only who to believe)

that you should do keto or carnivore. Feel free to read or believe the vegan doctors or the keto/carnivore ones. But I've made my choice and I ~mostly have been right in my life, including this. Feel free to become a psychiatrist/psychologist/sports-science and do your studies and bring a better way.

Until then, eat keto/carnivore with the best red meat you can afford. And then worry about the world. And humans are smart enough to fix this particular issue.