And lived to be 35 if they were lucky. Not to mention the animals and plants of that era were vastly different; we have bred them to our liking.
not exactly. i mean actual caveman era, maybe, but that was more likely due to being killed than anything. throughout most of human history, living to old age actually wasn't that unusual (especially in places like ancient greece/rome) , but infant/child mortality was so high that it skewed the average life expectancy so much to give the impression people only lived to 40.
the point about selective breeding is interesting too. the overwhelming majority of wild plants are either useless or straight up toxic, the cost benefit is laughable for the amount of calories and nutrition they provide. i simply don't buy it that they were ever a staple of our diets. even fruits were kinds worthless, they were mostly just starch , thick shells, and had a metric ****load of seeds that are equally toxic if crushed. most vegans seem to have this implicit assumption that plants and fruits have always been like they are today and are these noble lifeforms that solely exist to sacrifice themselves for our benefit. they fear GMOs, without realizing all modern crops are also GMOs, and know nothing about how natural selection works. honestly pretty narrow, unenlightened thinking.
if someone wants to make the argument that modern produce is in fact nutritious in a unique enough way to be optimal, maybe i can get behind it, but i simply don't buy the idea it was ever optimal in an ancestral environment or necessarily must be optimal for everyone by default.