You know, I'm looking to go back to the US, even to Seattle (which doesn't exactly thrill me), just because even though the negatives here are not as great in magnitude as Seattle's, the positives down there outweigh Vancouver's. Never thought I'd ever be saying that. But if you look at the OP, you'll see that Vancouver's starting to look a lot more like US cities—with worse drivers. I never thought I'd see worse than SF, LA or the American South, but it's here (and it's not a Canadian thing, it's a Vancouver thing—drive in Toronto for a couple of weeks and you start to realise that).
Plus, just the nastiness. Yeah, you obviously run into unpleasant people and city stresses in the US, but here it isn't very often balanced by friendly or even gracious behaviour (at least not in my experience). I mean, so many posters here live in Vancouver, but we're posting on Discover Seattle? Go to DV and you see the nasty underbelly of the city.
I've lived in places that turned out to be "nice places to visit, but . . . " and that's how I'm starting to see Vancouver. It's a nice place to visit, but I'm not so enamoured with living here.