Would it be heresy for me to say that I'm not sure I think the endemic winter doldrums / SADD theory has much credence? I have met many people over the years whom I suspect of using Seattle's winter weather as an excuse -- Oh gee I'd love to, but the weather's just got me *so* down. Well, wouldn't you perk up if you were eating a delicious hamburger, say, out at a restaurant with friends? I don't buy it. Seattle's not the only place where it's damp and dim and lousy for long periods of time during the winter. I grew up in one of them, and there wasn't the self-indulgent wallowing that tends to occur here.
RCC's too-far-to-drive theory -- yes, some of this. And maybe tied up with the annoyance of parking, in many neighborhoods -- a good friend lives in a condo on Capitol Hill, only an option via Metro. Which system, even though I commute-salute it, is not a good option for late nights and trips far afield from thoroughfares. I've mentioned here that I have an eye defect that makes it dicey for me to drive at night -- so my pal in Lynnwood I visit hardly ever. (There, I am part of the problem.)