Don’t remember who said it, but it likely was Jeff Cooper who said he’d never met anyone who’d been in a confrontation that said “I wish I hadn’t had so much ammo with me.”
I’m at work, I have a Shield .380 with two 6-round mags and a Glock 30 with 2 10-round mags of .45 ACP, that is my everyday go to work supply. If it’s a normal day, I pack the Glock in an ankle holster, depending on weather and dress.
I’ll carry a Sig 239 or a S&W model 19 depending on how I feel, most of the time it’s the 19.
It’s a “brick wall” effect:
You run out, you die.