INFP (One of the 16 Meyers-Briggs personality types) are known as idealists, sensitive, creative and introverted. To many of us the world "as it is" is crass, competitive, unnecessarily harsh and cruel. This leads to depression (where I am right now) because my need to make a living overshadows my personal values, beliefs and true personality.
This is something an extrovert cannot understand - that the world is designed for them. Thus, INFPs can be misunderstood by the extroverted types, and become quickly cynical.