Some people enjoy living together with their parents after they have grown up. They hold the opinion because, living with parents, they can take better care of their parents and vice versa. Meanwhile, they can turn to their parents for help if they get into trouble or have some difficulties. To them, life in a big family seems to be more enjoyable than that in a small family.
Others, however, prefer to live separately. They cherish the idea to be independent of their parents, seek more freedom and wish to have a place of their own, in which they can do what they like. Bedsides, they don't want to be overprotected by their parents but long for chance to face the society by themselves.
As to me, I like an independent life style in spite of the fact I love my parents. Different generations have different life styles and values. What one generations likes may not be another generation's fondness. Living separately, each generation can enjoy different value. In addition, by leading an independent life, I can train my character and develop my own ability to deal with things encountered in my life.