Wonder what the cost is for the bicyclists who are injured for life.
You will have fewer cyclists injured for life if cyclists take full control of their lane. It prevents drivers from trying to do a dangerous "in lane" pass, where they drive by a cyclists without moving into the left lane, clipping the cyclist and possibly killing them.
When the driver has to move their vehicle into the next lane to the left, whether it's oncoming, or same direction, the driver is MUCH more cautious and aware and double checks around their vehicle to ensure it's safe to pass. They naturally give the cyclist much more clearance in doing so.
A cyclists out in the middle of the lane is also MUCH more visible to drivers--you simply get paid more attention, and that is always safer. Sure, sometimes you get honked at--but a driver who is honking at you SEES you.
It's much safer.
It also means bikes will be out in front of cars, slowing them down, on any street that does not offer a bike lane. It will then be drivers, rather than cyclists, who demand bike lanes--and this is as it should be.
Stated this way you can see why bike lanes should be a PRIORITY on arterial roads. They aren't nearly as necessary on side streets...