My only point I’d add. If you carry a gun. With a manual safety. Make it habit to sweep the safety off every time you draw and shoot. Wether you choose to use it or not. If it’s already off, no loss.
If, for some reason, it gets flipped on in the holster. That one time you flipped it on and forgot to flip it off.
One could look silly pulling the trigger in a gunfight and not knowing why your gun is being very quiet.
The OODA loop would be very chaotic.