"Light is sweet, and it is pleasant for the eyes to see the sun." - Ecclesiastes 11:7
My wife says this should be my life verse. I'm obsessed with sunlight for my mental stability. Unfortunately we live in one of the grayest places on earth. Although we did just get permission next summer, and it's a mental stability move to a place with sunlight. It'll be good for the family.
Anyhow, it's true. It's pleasant for the eyes to be reminded of the light that is a mere shadow of what will light the world to come. The sun is brilliant, but when we depend for light on the Son instead we will be blown away. And there won't be gray places anymore. I'm also pretty certain we wont have to make mental stability moves.