You can thank your ancestors for your high intellect because of their consumption of meat. Fun fact, humans started eating meat almost 2 million years ago! And because it is so easy to digest, our stomachs started to shrink in size and it is the size it is today. At the same time, due to the increased protein intake, our bodies started getting more energetic and our brain sizes started to grow.
So from grass and insects, humans moved to finding ways to meet their demand for more meat, and we moved to hunting larger animals. Due to the increased brainpower, tools got invented and slowly, consumption of meat culminated into what it is today. Aren’t you glad high consumption of these meats is how you are losing weight now, while you continue to grow your brain power?