I rode with a work acquaintance at night once, and noticed he kept his high beams on the whole time, despite oncoming traffic. I eventually said something, like shouldn't you dim your lights when there's someone oncoming? He looked at me like I had antlers growing out of my forehead. "Duh... The high beams are brighter and let me see better." That's the bottom line: Not even a thought about other drivers. And these people are everywhere.