Your last comment is actually pretty close to the truth.
Lots of driving/fog lights ARE incorrectly set, even on brand new cars, I've lost count of the cockeyed new Holdens and Falcons with lights ablaze.
They can be a PIA, especially in bad, non-fog conditions like rain where the light is diffused causing glare.
Jury's still out on the usefulness of DRL's, most Euro manufacturers don't want them.
If an idiot is going hit someone, the target will get hit regardless of whether lights are on or not.
I drive a high visibility car, turn my lights on when conditions call for it and still have idiots aiming for me at intersections etc. !