I often ride my bicycle on the sidewalk around here, but I do so carefully and always give priority to pedestrians (of which there are few where I am to begin with, but I’ll get off the sidewalk for them). Legality be damned; this is the only way to not be flatted by some asshat in an SUV in some places. For instance, overpasses here have no shoulder at all but sometimes there is a sidewalk, and if you’re lucky there may even be a guard rail separating it from the car lanes where everyone is doing 60+ in a 35 zone with impunity.