How do you know the world is not perfect already? What other worlds do you have to compare it with? As a whole this planet has a very nice balance to everything. Yea sure from the individuals perspective there is always something to improve in your daily life, but maybe that thing you improve, detracts from anothers life? And they improve their perfect world, and it detracts from yours. But if you look at the big picture, this planet is pretty magnificent.