Nope, never in the daytime, although my last two bikes I've always had accessory lighting because of an experience I had many years ago while driving in my car right around dusk. I was preparing to change lanes, checked my mirrors, and looked over my shoulder. Saw the car in the next lane was far enough behind me, the lane was clear, so I turned on my signal, and the very instant I started to move over, I looked again, and the right headlight of the car behind me, split in two, as the bike ahead of him, next to the rear of my car shifted position. His headlight had overlapped the headlight of the car behind me. Even though I'd been riding for decades, and always watched for bikes, I didn't see the bike in the lane beside me even though I
looked. I decided from that time on, my bike wouldn't do the same to someone else. I added a couple of LED accessory lights to the crash bars of my previous bikes, so my single headlight wouldn't blend with another car's headlights.
I don't drive with brights on, except for when it's needed at night for one reason, and it's a reason most motorcycle rider should understand. This too is from experience driving in a car, and especially riding a bike, and that's the natural tendency to go where you are looking. When you see a bright light coming toward you, the natural unconscious impulse is to look at the light. I know as many of you do, that when you see the glare of an approaching light, the proper thing to do is look away, but too many people don't know this. While I want to be noticed, I don't want to trigger target fixation with a driver approaching me at high speed from the front. I believe I've seen this effect over the years, as an occasional oncoming driver starts to drift over the line, and when they pass me, I see them looking at me. I'd certainly never run high beams at night with approaching vehicles that are closer than 500 feet (see WA law below). Those of us with older eyes experience at least some issue with glare. I would never take the chance that I'm dazzling an oncoming driver.
My Spyder has two headlights that are on during the day, trim lights along the front of the frunk, and a driving light at the center bottom. Extra regular intensity lights make me look different than a car, without the added glare of high beams that someone may stare at without realizing it. But, see the caveat of this concept below.
I did see a post from 2017 stating Washington State
requires brights and this isn't true. The law says they can be used
as needed, but must be switched off when at 500 feet from a vehicle coming toward you from the front, and 300 feet from a vehicle you are behind.
As is obvious from the replies in the thread, other feel differently. This is what I do and why.
WARNING: Switching to science nerd mode. If you continue reading, try not to doze off.
If you want to understand how its possible for another driver to look right at you and not see you, read the Book "The Invisible Gorilla" by Christopher Chabris and Daniel Simons. In a nutshell, for those who won't read the book, the brain is biased toward seeing what it
expects to see, based on
experience. The vast majority of visual traffic experience for the average driver is cars and trucks, because that's what everyday traffic is composed of. When a driver looks to make a turn, this bias causes an anomalous object like a motorcycle to be
ignored by the brain. You truly are invisible to the driver. What's even more amazing is that, according to visual studies, wearing clothing like hi-vis vests and jackets, makes you
even more of an anomaly to the visual system. According to research, this makes you
LESS likely to be seen, which is contrary to what we believe and are told.
So, with this visual study data in mind, one type of lighting that will likely help us be seen is having two headlights, which our Spyders do, because the brains of other drivers
expect to see two headlights. And yes, knowing what studies show, I still like to wear my hi-vis jacket when riding in certain low visiblity conditions. Sometimes it's as much about
feeling safe as it is increasing the odds that we are safe, or not.