Humans survived because we evolved to eat literally everything. From the tiniest of seeds to whale blubber. Fruit, bugs, cows, wheat, ocelots, cactus, pufferfis

Humans survived because we evolved to eat literally everything. From the tiniest of seeds to whale blubber. Fruit, bugs, cows, wheat, ocelots, cactus, pufferfish. If it moves or grows humans likely survived on it at one time or another. There are clearly diets that allow for more than survival. Just be careful saying we evolved to do X. It's easy to get your causal arrows mixed up.