Essays allow you to add your "Take" on a subject. It ensures your understanding goes beyond mere book rhetoric and you are able to apply your personal knowledge and understanding of a topic.
Why do university students have to write essays regardless of what they study?
Essays are a method of learning communication skills. They are not just about facts and information on a certain topic ... The research and collection of those facts, the organization of thoughts and how one presents their information are all learned skills.
The ability to communicate structured thoughts in a grammatically correct way to others is very important. If you manage to escape college without learning this skill, you should sue them for a return of whatever tuition you paid.
Essays are a way for students to showcase their knowledge in a particular topic, it addresses 3 different learning areas which is to recall information learnt, evaluate that information, and propose new thoughts and ideas themselves based on the analysis of what they've learnt.
They also help a studentg leanr to write cleasrly and logivallly - at least they should help. .
this question also came up to my mind several times. And what should the students do who are not that good at writing? I am a good example of those. To be honest with you, I have used Marvelous essay service several times and I am really happy that I perform quite well