I think you're all jsut suffering from SAD (seasonal affective disorder, *slaps herself on the wrist for being overtaken by medical abbrevations* as you haven't seen enough sun as it's cold and winter (for most of us). I find sun is addictive, wasn't too keen until I lived in a very sunny place for 2 months, and now i'm pining for it. I NEED SUNSHINE!
I find the sun is much like beer. While it is enjoyable, and promotes a pleasant feeling in small quantities, it is capable of bringing me great pain and indeed nausea, and doesn't mix well with my working environment (yes, if the sun is shining through my office window I can give myself such an apalling headache I become very nauseous).