There are many reasons why students use online writing services. As a person who has worked for one of the dissertation writing services, I understand the pain and frustration that some students undergo.
1. Some students are from countries which do not use the language being examined.
2. Some students work and study at the same time. finding it hard to juggle the two. They need help to have a better work-family-studies balance.
3. Some students get too much classwork that they cannot cope.
4. Some students have money and are too lazy to complete their class work. They resort to online help.
5. Professional writers produce better work than students