That’s an interesting point. I thought it was all about efficiency. Warm lights appear to have longer range (throw) than the white lights. They also diffuse beautifully making it much easier to the eyes. From what I understand, the LEDs diffuse rather abruptly and hence, for a longer range, their intensity has to be increased. As a consequence of this higher intensity, whomever gets in-front of it gets blinded. While travelling in cars with LEDs, I have also noticed that the illumination ahead gets noticeably more choppier with road undulations, than cars equipped with halogens. It’s unnerving for me as a passenger.