Online course work is completed independently. Professors and other students only need to be contacted when necessary.
Driving to class isn't necessary. This not only saves time, but also saves the cost of vehicle maintenance, parking and gasoline.
Logging on to class can be done from wherever you desire and whenever you feel like going to class.
Since all aspects of the course are completed online, you don't have to worry about speaking in front of others.
Unlike in traditional classrooms, when you're enrolled in an online course, you have continuous access to course materials.
Meeting with your instructors face-to-face is no longer necessary. You can meet with them in an online chat session, contact them through emails or even by telephone.