Yeah, I live in the northern burbs and am lucky enough to be a 5 min drive from a light rail station. But there are huge swaths of the metro, like you said some of the densest populated, that are nowhere near light rail. Also - if you want to take the light rail to the airport, it takes forever from most spots because you have to take it all the way downtown and then out to the airport. Which for me is like a 80-90 minute endeavor...while I can just drive there in 25-30 minutes.

Well, if you ever see it when you know for a fact there is now snow on the mountain, you would know it isn't snow today

The thing is that Link isn’t in the median of I-5. That is really the kiss of death for rail transit, because freeway median stations (like the Green Line in LA) are incredibly loud and pollution-heavy, very unpleasant to wait at. But because Link just follows the side of I-5, the stations are a lot more pleasant, especially Lynnwood, which is several hundred feet from the freeway.

Now that I know it can happen. Hard to disagree

Memorized? It changes every day. How would I know if a white speck we saw today is snow or the sun reflecting off a rock face.