It's only money until it's not.
Evaluate the situation, and if the opportunity and need arises, shoot them. Don't rely on the kindness of strangers/bad guys.
I try to sit in restaurants with my back to the door and strong side hidden, so I can see what happens inside and any movement around my concealed holster is hidden. Not really an option in line at a teller.
I also train to draw and fire accurately and quickly on multiple targets. While that is not ideal, it's better than laying on the floor dying as they shoot you. And you really don't know if they will or won't, and playing the odds is probably not the best action for some of us.
My dad once met a former director of central intelligence and the most notable thing about the guy was that once in a crowd, you couldn't pick him out. Stay hidden in plain sight, until you draw and remove the threat if needed. And don't try to do it without deadly force if using the force is a better, safer option.
I really couldn't care less about the well being of the bad guys, and I really don't care if they die or not, so it's just a matter of the well being of those around me (and myself, of course.)