When it becomes easier to obtain something, we don't spend less effort on it : we get more of it. The environment we involved in never gave us too much light, food or things, and now that we can have almost as much of these as we want, we destroy nature and ruin our health by abusing them. I believe that getting more people to understand this problem is an important part of solving it : we will have a harder time fighting insomnia if we don't know why people like light so much.