Because we're not allowed to argue balls and strikes, but batters do all day long.Often times feels like the thought process is it's easier to piss a pitcher off than the batter, so unless the pitch is nutted, it's a ball.
Regardless of small or big, so long as it is consistent I can manage as a pitcher. But that also means same zone on 3-1 as 1-2 (or 2-0 as 0-1 for USSSA guys ).
Also on pitches that move/curve when an umpire says it landed outside even though it crossed, but then say the inside curve missed bc it didn't cross.
It's a power dynamic, and the pitchers have none. If a batter does push it far enough to get thrown or, so what? That's 1 or 2 abs max, and the ump doesn't open up the strike zone for the rest of the team in my experience. If you're lucky enough to get one call, the other teams noticing shrinks that strikezone back up like the td is watching.
If a pitcher says one word you're pitching you a tea cup the rest of the game. It's bs.
I guess they figure that ending a guys inning is so much worse than just putting him on base, especially since i can't even complain.