An employee who has made an awful mistake and was absolutely mortified over it will never do it again. A new guy might. Good managers know this.
Sometimes I get a pang that I've missed out on the latest big, dramatic love, but I know it isn't really what I want. I want the person who makes me feel at home the moment she steps into a room. Knowing you want that makes a big difference. You will find them, I'm sure.