I took a breathalyzer test and failed. What good would an attorney do in such a cut-and-dried case?
Not every case is exactly the same. Having an attorney that can properly analyze the facts of the case and the sequence of events could (in a best case scenario) earn you a “not-guilty” verdict, or have the charges reduced. This could be the difference between jail time and facing consequences that are manageable. Also, there are certain legal defenses which do not even consider the breath result. In Motions alleging that the Officer did not have "reasonable suspicion" to stop your car or "probable cause" to arrest you, your subsequent breath result is not considered by the Court in its ruling.