Police Officers, who are highly trained and who carry guns on a daily basis, shoot the wrong person - sometimes. They shoot innocent bystanders, either by aiming at the wrong person or by missing and hitting someone else.
Many of them, even when they shoot the "right" person, have to go into therapy after having done so. I think for some Police forces it is mandatory, whether the person wants it or not.
I am comforted that you chaps feel confident enough to carry a firearm, in the knowledge that you will not shoot a member of your own family by mistake and that you will be able to live after having killed someone. Your experience of such situations will ensure that no tragic accidents occur, coz' you're really good at making decisions when your head is swimming with the massive amounts of adrenaline your body is releasing.
Oh and before you say you will be really careful, during the seconds that you were making sure, in the dark, whilst in the throes of blind panic, that the person you were aiming at wasn't your spouse the armed burglar has shot you. He has no such qualms, his family aren't in the house and he sees a gun pointed at him.
But that's OK, your husband and kids won't need to get a new video, coz he ran away without it. Stupid burgular.
