I've noticed folks whose headlights are not working properly who use their high beams. For example: someone with one headlight out. I'm "that bitch" who will blast my high beams right back at jerks who fail to dim theirs for oncoming traffic, and sometimes when I do that the other car will turn their beams off and I can see that only one of their regular headlights is operational.

As someone who is light sensitive and drives for a living, it sucks and sucks a lot.