Back in the early days of human activity, the earth was covered with about 18 billion acres of forest lands with trees of various types. Today, that has shrunk to less than 11 billion acres.
Wood in general helped create civilization as we know it today. Even when building with brick, concrete and steel, a lot of wood is involved in each project. We have been exposed to using wood in so many different ways, we have lost the sense of its importance in our world today.