See, I like dreary days! I love dreary days, especially in the summer and fall, where they're all atmospheric and gloomy and rainy! It's that day after day, turning into weeks, turning into months of greyish/white skies with the sun setting before I even get out of work that starts to get to me, and I generally don't even realize it's happening until a spring day hits and suddenly I feel better (or the last year or two I've had the presence of mind before then to realize that that's probably why I'm feeling so depressed around February or March, and that my life isn't actually as hopeless as it seems). I just have mild SAD, I think.