Insects aside, I realized there was something wrong about blue light much before any articles appeared about its negative effects on our circadian cycles. It was nearly 20 years back when I bought some of the then young blue and white leds to make some experiments with them, and I quickly realized I hated blue ones. No matter how I reduced the current through them, their light made me feel uncomfortable and didn't like as well cold white ones because they emit more blue light than warm white leds. I still have in a drawer those 10 leds I bought, none of them was ever used in any project. Unfortunately lots of gadgets appeared in the early 2k and they all used blue leds which were going to become the standard pretty much everywhere. It was then when I realized how much and why I disliked that light: it made me nervous; I couldn't stare at a blue led light, especially the bright ones, for some time without feeling anxiety. Then one day I read about how blue light affects us negatively and went "aha!". Now I mask or paint, or even swap where possible, all blue leds those lazy designers keep sticking into gadgets and appliances.