Well for me to coexist means I have to first exist. If I want to stay alive on the dark rural roads I ride on a bright light is a must. I'm not the fastest in the world but do get to speeds over 20 mph for short distances on pretty much every ride. The roads I ride have little or no shoulders so the margin for error is quite small. Add in the raccoons, porcupines and skunks that I have to dodge and you'll understand the need for bright lights. Not to mention the occasional moose, they tend to not show up well even when I'm in my car. They also could care less about moving for a car, much less a little ol' biker. So put me dead center in the class of those that believe that there is no such thing as too much light