Earlier quoted context omitted.
But neither do plants produce "naturally" food for humans. The produce it to reproduce and make the fruit delicios so animals eat it and transport the seed somewhere else to spread. Humans are very bad in spreading plants by means of eating and deposing the seed.
Plants that humans eat are literally some of the most widespread plants in the face of the Earth. Apples, tomatoes, potatoes, corn, soy, and rice are all massive successes for the plants in spreading, that doesn't even get into sugar producing plants. This started as humans eating and distributing seeds. Farming just made this process not need to involve eating. It's not just about delicious either. We eat some bitte…
Are chickens not the most wide spread birds? Sheep and cows the most widespread 'large' animals.
Even rats are doing as well as they are because of humans.
Yes I suppose you can reduce the meaning of life to successfully creating the next generation, that applies equally to humans and amoeba, but I would contend its too reductive.