Answer the question about text:

Funny , how past mistakes can haunt you , and destroy whatever you hold dear . And funnier still , how your own mistakes can bring out other people 's worst to hurt you . It 's like a vicious cycle of retribution , hurt and hate altogether . It 's insane , how blissful euphoria can fade out to impending doom .

What does the narrator think of people ?
They will always harm one another .