WHY USE A TRAFFIC TICKET LAWYER TO DEFEND A SPEEDING TICKET IN SA?

There seems to be a general presumption among many victims of speeding tickets that hiring a lawyer to fight a traffic ticket for them is too costly.  I have heard individuals who received a speeding ticket in both San Antonio and Bexar County claim it is just cheaper to travel down to the San Antonio Municipal Court or one of the various Bexar County Justice of the Peace precinct courts and pay the traffic fine in full.