It's an advantage to have a solid grasp of basic financial concepts as early as possible so that one can be prepared to face the world with minimal shock.
Being a lawyer is hard enough without your own client screwing themselves over. If you don't believe us, just ask these lawyers with first hand experience.
In the perfect world, everyone would get along. But that's just not realistic—disagreements are a part of life. It's just annoying when things get petty.