I already feel like your avatar in traffic some days.
Oh I agree, but we are not comparing apples to apples when we talk about U.S. roads and Canadian roads, at least not in this part of Canada. The lanes here are too narrow on most roads to safely lane share. Unfortunately I know what would happen. Hell some motorists think they can lane share right now and it is incredibly dangerous. Twice now I have been in my lane, keeping a safe distance with the vehicle ahead of me and cars have pulled in right beside me in my lane. The last one would have killed me if I had not had another lane to bail off into (the driver was oblivious). Another pulled up beside me while stopped in traffic (for a red light), in that case I had a conversation with the driver and explained how that sort of behavior would get someone killed and was against the law, which states a motorcycle is entitled to the same space as a car. Imagine the ensuing chaos and confusion if those rules were thrown out.
I understand the desire to be able to have special privileges due to the smaller size, and better maneuverability of a bike , but like so many other groups that get special consideration, it always leads to hatred by the others that don't get those privileges. When we are already so vulnerable in traffic do you really want that? All studies aside, consider human nature, before asking for special consideration, you might get more than you bargained for.