Humanistic psychology focused on individual's potential and stresses out the importance of self-actualization and growth. Its belief is that people are innately good and social and mental problems are results of deviations from natural tendencies. I believe that the statement above is enough to say that humanistic psychology presents an optimistic view of people who are part of the world.
We really need both for munitions reasons you would never realize how much tech and science we use in a daily basis