Many interventions of psychologists are not just clever observations in a private psychotherapy office. A psychologist is just as likely to administer tests, conduct intake interviews or spend the afternoon filling out forms for the insurance company, as conduct individual therapy sessions. Some of these other activities are just as interesting as therapy but many are not, and these represent the dull parts of psychology practice. The other source of information about psychologists is the venerable introductory psychology course. These courses are taught in high school and undergraduate college.
Psychology is an intrinsically interesting area of study.
The courses present all the fascinating facts and theories of psychology. The genuine intellectual attraction of Psychology leads people to believe that the professional practice of psychology is just as interesting. Of course, the clinical application of psychology in everyday practice is not as interesting and fun as the intellectual study of psychology. This is true of many professions. Unfortunately many people decide to apply to graduate school because they want to continue the study of Psychology and not because they want to be psychologists.