The odds were of needing a gun where most of us live and work? The odds of needing more bullets? Walter Mitty anyone?
Better to have it and not need it then to need it and not have it.
When the off-duty LEO stopped the active shooter in the mall in Clackamas, OR several years ago, it took every round he had in his gun (it was a 1911). I watched an interview with him where he described how he felt, sitting there with an empty gun, waiting to see if a second active shooter was going to fire up. Not a good feeling. I’ve heard a lot of survivor stories where guys complained about not having enough ammo.......never heard anyone complain about having too much.
The only times you can have too much ammo is when you’re drowning or you’re on fire.