On the way to work this morning, picked up a non cycling colleague just before 6, about 5 miles out of town I spot a white halo type light glow about 1/2 mile up the road. Pitch black but I could see that the light was travelling the same way as me. Get a bit closer and could just make out 3 bikes with powerful, to see with lights, ahead. Only one had a rear light, dim and not flashing, in the middle of the other two.
All 3 in dark clothes, no hi vis, only one rear light. My colleague went absolutely nuts, ranting about bloody cyclists, etc. I couldn't defend them. These guys were not commuters that had got caught out with flat batteries on the way home, (I've been there and done that), they haven't been out during the day and got caught out by a longer ride or misjudged the time. They'd made a decision to meet up before 6am, in the dark and head out on country roads ill-equipped.
Whether their self preservation gene is defective or it's Darwinism in action I'm not sure. But like I said I couldn't defend them to a non cyclist.