The trees around us are extremely important and have always been necessary for improving the human condition - both during its life and after harvest. It is not a stretch to believe that without trees we humans would not exist on this beautiful planet. In fact, some claim can be made that our mother's and father's ancestors climbed trees - another debate for another site.
So, trees are essential to life as we know it and are the ground troops making up an environmental frontline. Our existing forests and the trees we plant work in tandem to make a better world.
The modern human community has other, more practical reasons to admire and honor trees. Here is a short list of reasons trees are necessary for improving our worldly condition.