Why You Should Travel with Just a Carry-on

By now you know I'm a huge believer in carry-on travel. Unless it's absolutely necessary, I refuse to check a bag. When I do, it's either at the gate when they ask for volunteers and I can see them put my bag on the plane or on the way back home from somewhere that I've bought too many gifts and need extra bag for those purchases (all my buys go with me and my clothes get checked). 

Have you ever lost a bag while traveling? I mean, obviously, the airline lost it on your behalf, which...