After completing basic school level education, most of the people aspire for colleges/universities for further education. Although everyone seems to have different motive to join colleges but the most tempting one seems to be getting a hefty pay package after leaving the college.
Formal education is a well-established method of learning and has been developed to highly mature form with the development of human civilisation. People attend colleges and universities not only to gain a degree or certificate but to attain various other goals.