Memes

The problem is that incandescent lights are 1) warmer in tone, which is less harsh for the same candle ratings, 2) have a more gradual boundary than LED projector-style headlights, which means you aren't suddenly blinded when the car coming towards you goes over a minor bump, and 3) aren't a point light-source with the reflector design they have unlike LEDs, and thus are less painful. NONE of these issues are dealt with in a vast majority of new cars (adaptive-angle headlamps would do a lot to help, but would only fix one of the three issues - and only when the camera can actually figure out when they should be lowering the angle, which is far from foolproof).

If I could easily replace the LED headlamp in my new car with an incandescent lamp, I would - because I could still see decently with my old car's headlights, and I wasn't at risk of blinding everyone in the oncoming lane next to me.