Allow me to restate why I still believe umps should call balls and strikes. Just two reasons. First, over the long haul missed calls balance out and do not prevent good hitters from getting hits nor good pitchers from getting guys out--nor, for that matter, good teams from winning their fair share of games. Second, calling balls and strikes is uniquely--among all sports--at the heart of baseball, a quintessentially human endeavor. To take umpires away from calling balls and strikes is, quite simply, to marginalize them tantamount to emasculating them. They are part of the very fabric of baseball even though, as mvp78 points out, no one goes to a game to root for his favorite ump.
My gripe, I should add, is that all this is caused by television, and, to me, baseball is easily the best sport to watch in person. Unfortunately, I overwhelmingly have to watch games on the boob tube. Strangely enough, I like the strike zone superimposed on the screen so I can see where each pitch went. But I am fine, for the most part, with whatever the umpire calls because I think it's essential that that activity be a human endeavor. Indeed, sometimes it is is part of the drama of baseball. Last night Tazawa walked the first batter on 5 pitches only because the umpire missed two strikes that were well inside the strike zone. Trumbo should have never been up to bat with two and and two out, but instead he got that big dinger. I was furious. But to me that's part of the experience of watching baseball, and it did not make me want a computer calling balls and strikes. I like umpires engaged, not standing around waiting for a computer to tell them what's going on.