Life's too short to worry about the little stuff.
Never had a primer go sideways?
Never had a dropped primer?
Never had an odd number of brass cases?
Never have a case get crumpled or damaged during the process?
I could continue. But these are little things.
I worry about bigger things.
Will my wife's cancer return?
Will my LEO son get killed by some cop hater?
Will my DIL's cancer return for the 3rd time?
Will my granddaughter die from drugs?
Will my oldest son & his wife ever succeed in having a child?
Nope,, I have enough worries to where the little stuff doesn't bother me beyond a brief moment of cussing & then it's corrected & I go on.
Need another primer? Open a box, get what's needed & mark the box as a "partial" to be used next.
Need a bullet? Open a box, get what's needed & mark the box as a "partial" to be used next.
Damage a piece of brass? Throw it in the recycle bin, and grab another out of the bag.
After decades of handloading,, I found out long ago I'd have partial boxes of primers & bullets. No sweat.