The problem with 'the lane to the left' is that there are frequently two lane roads where doing so is illegal because of the double yellow line. I used to see that frequently on some country roads that people would bicycle on, and going into the other lane is really not an option (saw several accidents where two cars hit each other because there was a cyclist). In those cases the cyclist is also blatantly disregarding others and their own safety, which is why every single one of those accidents the cyclist was getting a ticket because it was also illegal to cycle on the roads (they had a speed limit >35mph).

Things are definitely far more difficult to balance, simply because there are also many places where the road conditions don't allow a cyclist to exist safely (no shoulder, high speed limit, and less than 300ft visibility).