As a biker, I dislike cars having DRL - obviously it makes sense from a safety point of view, but before DRL on cars, it used to be that if you saw a headlight in your rear view mirror, in the daytime, 90% of the time it was a bike (bikes have had headlights on all the time for donkeys years) or maybe a car being driven "enthusiastically" or a volvo.
Now, bikes merge in with everything else on the road and are much less visible. It used to be that a headlight in the daytime would catch your attention, now it's the norm. In fact years ago when I drove an original mini I had my headlights on in the daytime for extra visibility - in such a small car it was easy to disappear under/in people's mirrors.