There’s the rub.
You could have a lot of ammo and get taken out early.
OTOH, you could die early because you didn’t have sufficient ammo.
All battle plans go out the window once the battle starts. But one thing you don’t use as the basis of your battle plan is: I’m gonna die early, so no use being prepared.
“OTOH, you could die early because you didn’t have sufficient ammo.”
Personally I agree with the one armed deputy in Unforgiven who said “I just don’t want to get killed for lack of shootin back”