The cost of our success is the exhaustion of natural resources, leading to energy crises, climate change, pollution and the destruction of our habitat. If you exhaust natural resources there will be nothing left for your children. If we continue in the same direction, humankind is headed for some frightful ordeals, if not extinction.
Because it has no foresight. Natural selection has resulted in traits such as group selfishness being coded in our genes. These were useful to our ancestors under the conditions in which they lived, but have become noxious to us today. What would help us preserve our natural resources are genetic traits that let us sacrifice the present for the sake of the future. You need wisdom to sacrifice something that is immediately useful or advantageous for the sake of something that will be important in the future. Natural selection doesn't do that; it looks only at what is happening today. It doesn't care about your grandchildren or grandchildren's grandchildren.