The questions you asked about and which you have discussed apparently are synonymous with the concept of the "life of man", as dealt with by Philosophy and Psychology. Really, they are invaluable to many people's lives in the world of today, @arckrai. I believe you that, people cannot live successfully while in isolation. As the 17th century English author, John Donne, have said:

No man is an island, entire of itself; every man is a piece of the continent.

People should live, work, and play, with each other. They should depend on themselves, and be valuable to one another.
I am @gboyegaogunmola. I am a writer. I am writing article on the topic "psychological aspect of man". I want people to solve personal problems, through reading my "personality literature".
I really believe that, without having some people around us, we will not be able to work well, and achieve our goal, as much as what must be possible for us. We need valuable people around us, and we should create value for the others as well.
We really need people who are valued in the world of today. In fact, we should create what is valuable to us into personal life, change our life to become better, and thereby, change those of the other people too.