In the words of Jim Crumley (The Great Wood)
There are many good reason to plant more trees and to take the time and trouble to do it well. They create the most benevolent of all nature’s habitats. They create opportunities for a greater diversity of wildlife species of all kinds. They create a counterbalance to greenhouse gases. They create stable and long-term rural employment for people…and if rural people are employed they create the circumstances that bond people closer to their place on the map, giving them a stake in the environment of that place. They create opportunities for recreation in a beautiful environment. And they matter for their own sake. And they should matter to us because of the debt we owe.