Yeah, me too!

Let me add another observation. I'm not really sure about the following, but it's worth considering:

I'm a pretty careful (but not always legal) rider. I'm pretty vigilant about looking around and assessing what traffic around me is doing, and why. But when I got to the station and tried to lock my bike, something switched off in my head. I had completed my commute, and my vigilance was down. Then this happened.