The video below shows what its like to bike commute through Capitol Hill on a typical evening in Seattle. Traveling east on Pike Street, there is no bike lane or sharrow, but it is a popular route nonetheless—I’ve ridden it more than a 20 times
My guess is that to a sizable chunk of the populace, riding through the city in a scenario such as the video shows is not an appealing prospect
I tend to ride behind the city down Western Ave but it's a similar pedestrian car dodge. I just have Waaaaay more lights.