Fear of life

Dear friends,

Almost everybody has his or her own wishes, And to satisfy them we all work in that direction. I have never seen anybody in last 15 months of my college life who said me that "ya i am satisfy with my life" whenever i ask to any of my known person (friends, relatives, family members etc.) that how are you? in the starting of the discussion they will say 'everything is fine, but when i talk more about themselves to make my relationship stronger then most of them will definitely say "ya everything is fine but................" This "But........." explains that they are not satisfied with their life.

My learning by these observations are:-
1. People are not satisfying with their life ever
2. You can make your relationship stronger by talking more about themselves

This creates a paradox in my understanding that this is a good thing or bad that people always full of complaints with their life. As an entrepreneurial mind my thinking says that it is good for the growth of the society because this dissatisfaction of life always generates the ways to satisfy it and in this process everybody gets benefits of animal spirit which is driving the world.
on the other hand our religious opinion says that sacrifice of the material things will give you the ultimate satisfaction.
I am confused!!!!!
I want your opinion about this issue of everybody's life.