People dont like change, I myself dont like change. Once you get used to a set of people and an environment, you dont want that to change.
Change means a new environment. New experiences that need new reactions to adjust. Its just against our basic instinct of survival. It is this instinct of survival of avoiding injury and hurt that gives u the nerves when u go into a new terrain.
On the other hand, any person in his right frame of mind would accept that change is a universal truth of life. Then why does one resist when faced with changes?