There are many advantages and disadvantages of the life somewhere far away from other people and civilization, on the island. I will start with good points. Such life is certainly an unusual experience. It may happen only to few people. Many of us dream of living in such place. We imagine that it may be a wonderful thing. For people, who are shy the deserted island may seem wonderful. They think that it would be great not to meet other people and live far away from civilization. Moreover, on the deserted island a person could live in harmony with nature, would not have to go to work or to school. Living alone a person may feel truly free. You would not have too follow any rules or listen to your parents or teachers. Moreover, you would have total independence and you would take care of yourself on your own.
There are also bad point of such situation. On the island there may be many dangerous animals, which could attack you. Swimming in the ocean and sunbathing seems to be wonderful, but no one could do it all days. In the ocean there are also many dangers. To provide yourself everything you need, you would have too work long hours and learn to do many different jobs. Living away from civilization, you might miss all comforts of life.