the evil in the world

Why is this world so corrupted?
Are we really pretending of what we are not suppose to be?
Must we really pretend?
Why are we pretending?
Why do humans have emotions?
Why do we need emotions?hatred or love?
Why do we behave like this?
We can never escape death so why do we live for since everyone will die in the end?
So whats the meaning for every existence?
Who can tell me,who can answer me?