So that we can get information of the subject in our studies.
It helps us understand the topic/subject better therefore, resulting in better knowledge for us, and better grades in the various subjects
It helps us understand more about something and so that we can apply those information to our subjects and life skills. It also helps us learn beyond our classroom.
It helps us find out more about the topic and help us find answers for the things we do not know.
Very relevant comments here - the beauty of research lies in its versatility in being applied to any discipline.