And most of those cyclists would love to be on a bike lane instead, but those often just don't exist.

From personal experience it's also annoying when I get hate from car drivers who assume I deliberately use the road instead of the "bike lane" which is in fact only meant for pedestrians, but try to explain that in half a second while passing and when the official road markings are only visible with forensic tools.

cycling is my dominant way around the city during the warm months here. i used to take complicated, meandering routes to stay on the residential roads during my trips so i could avoid that type of passing. but at a certain point, i step back and realize that it doesn’t make sense to radically inconvenience myself in order to make auto drivers’ lives more convenient. we both pay for public roads: i have as much right to the good routes as any other resident; if it’s not working for you then vote for better infrastructure (in this case, perhaps a bike lane).

also FWIW this same problem exists in dense residential streets, just with the roles reversed. all those narrow intersections with no clear right of way and so many cars parked by them that you can’t see far: cars have to slow down way more for that whereas cyclists have maneuverability that lets them go a bit faster — until they catch up to a slow car on the same street. so anyway, don’t think that slowing down other classes of vehicles is a problem exclusive to bikes: on a mixed-use road every class of vehicle, including yours, will at some point require another vehicle to slow down for you.

I get annoyed at cyclist and I am one! I just won't ride a bike on a road without a bike lane because it terrifies me and morning commuter traffic on a road with a half-meter shoulder with barely awake hurried drivers going 50+ miles an hour is the worst place to bike.

Eventually I just moved within walking distance of work but would have loved to be able to get exercise biking 5-10 miles each way.