Imagine that you were on an isolated isle in the middle of the ocean, where nothing surrounds you but the dancing trees, the sound of the waves, and the echoes of weird animals. You would feel excited in the beginning for changing your daily routine and live an adventure. But as long as you live there, your attitudes will change as well as your manners and mentality; briefly you'll lose your humanity and become a merciless being.
This transform won't occur rapidly, it'll move leisurely. When the isolated people start realizing their need to the prior equipment which comforts them such as the fridge, the bed, the gas, the fast-food...etc; they'll act more antagonistic and aggressive to survive. They'll hunt animals just to eat, drink salty water to quench their thirst and sleep on a piece of wood or most of the time on a husky ground.
In addition, the isolated people will suffer from a lack of social activities and conversations because they aren't getting in touch with other people. Loneliness will occupy them, and they'll turn down in the dumps, where there's nothing to entertain or amuse them. They'll become spiritless.
Furthermore, people are used to live calmly in the cities, and policemen are always available to let them live in comfort and sheltered from all sorts of danger. But on the isle there's no such a thing. People might encounter danger in any time, and that'll compel them to use numerous harmful techniques to protect themselves from any attack. They live a daily war which they have to face in a violent way to endure.
Consequently, due to the lack of social activities, loneliness, and using aggressive methods to find a living, the isolated people lose their humanity gradually and turn to beasts while trying to survive.
...