1. A law degree opens a lot of doors. You definitely don't have to be a lawyer. Maybe you can list some careers you're interested in and I'll tell you if a law degree is useful?
2. If you want a job in the legal industry then it gets a bit harder. Because of the sheer amount of law graduates each year it is very very competitive, to the point where the top and middle tier law firms, when taking seasonal clerkship applications, will not even consider those who don't have a distinction average or higher.
And to give you a rough idea of how difficult it is to even get a D: I have had several lecturers saying that it is practically impossible to get 90+ in a law subject, and I have a friend doing an elective subject whose lecturer told them that he was only allowed to award 1 or 2 HDs - this was in a class of about 70 people. This is because a lot of law subjects (the core subjects, I think) don't have a quota for each grade. If a class happens to be dumb one year it's possible nobody will get HD/D.
3. Sorry, don't know the answer to this one because I'm one of the "majority of them"
