Exactly .. Ive had an unusually large volume of firearms shotgun pistol and rifle .. I've hunted animals since I was a young boy, served in the military (reserves) but never in battle, had lots of pretend missions and blank fire battles.
I've defended expensive livestock and poultry against animals that might want to eat them.
I have NO IDEA what it might be like to shoot someone

... and I have no idea how I might act/react in that kind of situation, and hope I never find out!
I live in an area where I feel no need to have a firearm at the ready for personal protection and have never felt the need to do so.