Lock Litter, that's how I'm starting to think when I see bike racks and lockup places with dozens of locks and few bikes.

I've got a teeny tiny combination cable lock, you could probably cut it with a pair of plastic scissors. I use that one or a slightly bigger one when I'm riding locally, I call it my Port-a-John lock, good enough when I just a thin door away.

I don't think there is a macho lock competition happening in the OP, just people using what they've got. Just for grins add a leather shoe lace and tie the bike to the rack with a bow knot just to see if anyone notices. You could also mess with their heads and see if a LBS has a broken heavy lock that you could have, then just lay it on the ground next to the rack just to see if any gossip gets back to you through the office grapevine ( I appear to be in a strange mood tonight, oh well, let it roll.)