In the case of umpiring?
It absolutely is.
There is no question about it, in fact.
Your sole job, as an umpire, is to be perfect in your judgment.
The game that I love does not depend on an umpire's peccadilloes, how much he hates rookies, or whether he ate too much before the game. It's about the two teams who play it, not Jerry West behind the catcher.