The campus is valuable because it helps in the process of writing and solving problems, rather than just doing the work for you. Not all teachers can clearly explain what is needed for a paper or coursework, and here you can simply get the structure of the work (and it's free). For those who don't want to put in the effort, there's even the option to get a ready-made text. The situation with problem-solving is similar: you can understand the process and figure it out.
