Robot Umpires

Umpires are the most scrutinized people in baseball, so why don't we just eliminate them completely?  Baseball has expanded replay to help the base umpires make the correct out or safe call, fair or foul ball, and homerun or not.  We can't go to replay to review a strike or ball call though, so the Pacific Baseball Association has a robotic strike zone for each player with an umpire making the call based on what the robot calls.  This is so that players know a strike is a strike and a ball is a ball, so now the players can't argue the strike or ball calls.  The idea of a robot calling balls or strikes is the worst idea ever!  What is a sport without human error, human error is a part of every sport and it's what makes the sports interesting.  Take for example Jim Joyce who blew Armando Galarraga's perfect game for the Tigers,  of course the Tigers were upset and furious with Jim Joyce, but its a part of the game and human error is what makes it special.  So taking out behind the plate umpires ruins the game, and gives an obvious advantage to the pitchers which they don't even need in this day and age with the ability to throw 100mph pitches.  So lets keep the replay system we already have in baseball and keep the human error the behind the plate umpires bring to the game.