Boy this story made me boiling mad! Surely your little light, no matter how bright, isn't anything in comparison to the car lights he meets. I agree with the suggestion that you might want to angle the light down a bit, but don't let this guy's preferences buffalo you into taking chances with your safety. I use my lights a lot, even in gloomy weather when cars would also have their lights on for visibility. It's my right, as a user of the road. He sounds like a crackpot to me, riding around in the gloaming with no lights at all.