While the billionaire buffs want to grow meat in factories in preparation for the exodus to Mars, the governments want to invest in renewable sources of energy. It's a universal truth that trees are important to life but there has to be a balanced production, and not a monoculture. Besides, human beings cannot survive on wood. Also, animals are natural eco-friendly organisms that have been created by nature to support specific life functions which are important to the earth as well as our society.