Renowned Great Wall of China Isn't Awesome Anymore

One of my greatest dreams in life is to be able to land on the renowned Great Wall of China, which is viewed as one of the seven wonders of the new world. This wall is viewed as the world's longest man-made structure, which extends from Shanhai Pass on the Bohai Sea in the east to Lop Nur in the southeastern portion of Xinjiang Uygur Autonomous Region, served as defense of several Chinese dynaties against the Hunnic, Mongol, Turkic, and other roving tribes from Mongolia and Manchuria.

However, the once awesome wall isn't completely awesome right now since majority of the wall is wasted. While, there are parts that have been rebuilt and reconstructed as tourist centers, still most portion of the wall is severely damaged. Worst, there are people from the adjoining village who are picking stones from the walls for their own purposes. My question is, why does the government grant such detrimental activity in the area? This is understood to be a heritage site which they should be watching over, and yet nothing is happening. I thought China is a well-to-do country, but why are they not using their money to protect this historical and first-rate structure that they're grandfathers built for the country's independence and safety.