Actually, the Internet and email have made writing more important than ever.
Email is the main way that work gets done among professionals in many diverse fields.
It's an important part of your training in communication skills. Using email can help you to communicate more fluently in writing. In some courses, your instructor may ask you to do writing assignments involving email, and you may ask questions and get feedback via email. It's fluid, fast, and efficient and has its own set of writing conventions in the disciplines, as well as in different professional cultures. Email is a good way to flex your writing muscle and to learn the words and ways of saying things that people working in a particular field use.