Traffic experts recognize that in many situations bicycles should not ride to the far right. Many states' vehicle codes specifically list conditions under which bicycles should move into the traffic lane and ride with other traffic.
Bikes belong on the sidewalk.
Sidewalks are dangerous for bicyclists. Most motor vehicle crashes occur at intersections, and sidewalk riding turns every driveway into intersection. Drivers are scanning the roadway, not the sidewalk, for other vehicles. Neither motorists nor sidewalk-riding bicyclists can stop in time to avert a crash. Bicyclists break laws.