My parent's divorce and hard times at school, all those things combined to mold me, to make me grow up quicker. And it gave me the drive to pursue my dreams that I wouldn't necessarily have had otherwise.
If you look at it ecologically, deforestation is high on the list of things which bring devastation. You cut down trees to build homes, for fuel, and you end up with no trees left, and you have to move on. If you take the earth as a whole, eventually there's nowhere to move on to.