I'm in favor of umps just getting it right the first time. That is always the goal. But with 3 instant replay chances the ump can get it right or wrong but it doesn't matter because replay will "correct it".
In college football the refs have stopped making calls on the field because instant replay will make the call and it's destroyed the flow of the game and to make things worse the views the replay officials are getting are worse than the ref on the field. Too many correct calls are being overturned and too many incorrect calls are being upheld.
What some fans don't understand is that blown calls are part of the game and the debate and whining afterwards is what makes the sports interesting.