The messenger bag discusssion piqued my interest, because I'm in the market for a new bag. Unfortunately, all the bags I liked didn't have handles, only a shoulder strap. I wear a suit every day, and I don't use shoulder straps because it pulls down one shoulder and basically ruins the way it drapes on my frame. Now I realize that this is a bit silly, but I don't care. I refuse to do it. I'm betting you guys have similar quirks - what are they?