Newer model cars include daytime running lights to get that benefit (with lower power draw). Even newer cars have auto headlights so we can be ultra-lazy about turning on headlights in low-light situations and when dusk approaches, which are two key times where headlights at full brightness benefit visibility (I wish more people would turn headlights on in foggy conditions though). I prefer it over the rule of thumb of always leaving them at full brightness, since they can also be a glare risk. So it is possible to drive defensively while not actively using the headlights yourself. I mostly wish we didn't seem to be on a trend with headlights to be making them constantly brighter and a larger risk to night driving (or having folks muck with the aiming of the headlights to "get more distance"). Sure, brighter headlights on my car help me, but introduce a bigger risk to everyone around me. I love it when I can drive at night without anyone else on the road within my field of vision, since I can actually dark adapt enough to help see beyond the headlights, as long as I am not using the high beams. Although I know I'll very likely lose that ability as I get older.