How do we look to the world?

Everyone has his own way of thinking to the world, but in general there are two approaches and each one in one extreme.
In one of the approaches people look to world in a lovely way. They think everything in the world is good, lovely and beautiful. There is nothing bad, ugly and horrible, except what our mind thinks and makes.
On the other extreme people think everything in the world is bad, ugly and horrible. They think life in general is collection of tricks and to keep it going you must fight or fly. When I look to origin of these thoughts; I generally find that the first idea is raised more in the developed societies, where everything is available for a good living. But the letter idea is more common among people where they are fighting with basic needs of life. People in the first party think that an optimistic look to the life and world has led them to the better life.
As I am socially with the second group of people; I am question myself if that the "optimistic look to life" itself is a key to a better life, or a better life gives birth to this idea. When you have every thing for a good living; you have a good shelter, good food, good income, good security and lots of other good things in your life there is no doubt that you will have good look to your life. But if you wake up with cry of your children weeping from hunger, you passed a rainy night under a broken shelter, you did not get your salary for 3-4 months, every moment you are expecting robbery, or bombardments how can you have a good look to the life?
Sometimes I am thinking about my father, my self and people who have came from the west. My father and people who spent their life in the west were in two extremes and I am wondering in the middle. My father spent most of his life as immigrant; he was fighting with horrible pictures life and finally passed away while he was very sick but could not get a good medical help and had nothing for a good living. The picture he saw from the life was a horrible one; war, hunger, broken shelter, insecurity, disease, and all terrible things that one can think of. On the other hand his friends who passed their time in the west had everything for a good life. They were away from war. Hunger, disease, and insecurity were strangers to them. The picture they had from world was beautiful and lovely. And here I am in the middle. I was a witness war, but now living in a relative peace. I spent my childhood in hunger and under broken shelter, but now am an owner of a better life. I have a test of both groups, and I have a picture from world which has both extremes.
Now if I come back to the message that "good look to the world makes your life good" I don’t agree. I would say that "good life makes you to have a good look to the world"