The correct answer to this open question is the following.
What Jean-Jacques Rousseau meant when he wrote: "Everything is good as it comes from the hands of the maker, but degenerates once it gets into the hands of men." was the divine creation is perfect and serves a purpose, but when humans intervene in gods creations, it is distorted because humans are greed and ambition makes people try to exert power and control over other people and territories.
An example that Rousseau could have used to support his claim is the use of the raw material uranium, that could be used by science in many positive ways, but humans made it into a lethal weapon that is used as a bomb.