Cycle helmets on handlebars
This has been baffling me for some time, at least once a day I see someone cycling along with their helmet dangling from their bars. Why? Who are these people that leave the house with a helmet and at some point, decide that it's no longer required.. "actually, the tarmac is looking quite bouncy today, I won't bother.." Apart from the safety issues, surely it's more annoying to have it dangling there than on your head.
I've always worn a helmet and have recently become quite fanatical about helmet use, as I hit some oil at quite some speed and smacked my head on the edge of a kerb with enough force to crack my helmet, god only knows what sort of state I'd be in had it been dangling from my bars.
Anyone else got anything that baffles them about other cyclists?