I have been driving with my headlights on at all times about 40 years ago. I had a 1982 blue Toyota pickup truck that must have been invisible because people kept pulling out from side roads or to pass when I was coming at them. After pulling off the road a few times to avoid a head on collision, I always drove with my headlights on.
When riding my motorcycle, I have a headlight modulator that flashes my headlight every couple of seconds to make me and the bike stand out. I rarely have anyone cross my lane or pull out in front of me now that I have that on the bike. They are legal in all 50 states under a federal motor vehicle ruling. Some people may hate them, but, they keep me alive.