Because you are taking a gamble on your future. Duty lawyers typically spend about 5 or 10 minutes with you to discuss your matter on the day of court. They might not ask you the right questions about what happened, and they won’t have any supporting material to hand up to the Magistrate to help reduce your penalty. You also won’t know who the duty lawyer is and their level of experience and skill.
We strongly recommend you contact us to represent you so we can safeguard your rights and the outcome.