Humans diverged from the apes when we began to walk upright on 2 legs.
We then evolved into hunter/gatherers, providing enough energy to grow
larger brains and develop tools, weapons, fire, hunting, and food
storage. This means we evolved to be able include meat in our diets to
better survive scarcity. It does not mean meat is optimal or even
necessary today. To focus on the meat-eating part of our evolution is to
ignore our walking, food gathering and storage, tools, fire, and
shelter-building - adaptations from the same time period. Not to mention
our most important asset: empathy, which enables our most important
survival skill: cooperation.
Since then we evolved into a
technological society with a huge population, all supported by fossil
fuels and fertilizer-based agriculture. Drilling & Livestock
concentrate this wealth & power for a few of the richest people on
earth.
What's coming is a 2-fold revolution (or re-evolution) in
human progress. The Solar Age and the Vegetarian Revolution. As fossil
fuels become scarce, energy is solar - a distributed and democratic
energy source! Farming becomes a photosynthetic process again. Wealth
will spread to everyone evenly. Meat-eating will be a sign of gluttony,
greed and disease!
Big hugs go out progressive vegetarian Thom Hartmann. I've been meaning to read his book The Last Hours of Ancient Sunlight which sheds light on our current energy situation, global crises, and how our politics affect our future. Truly a man of vision, compassion, and action!