In California in the 1950's we were schooled to ride against traffic with special attention to vehicles driving out of cross streets and driveways turning right crossing our path (since the driver is generally looking to their left). I never paid any attention to the fact that ridding on the left allowed you to view everything coming at you. The only down side was stopping for drivers at cross streets and driveways.
At some point California Code had finally been written or revised that required riding with the flow of traffic. I recall how sensible it felt to ride with the flow as a defined vehicle with almost the same rights. Since then I've been seriously rear ended twice and turned into many times as I'm sure many have.
I've since moved to Danville Ca. a very bike friendly laid out community with a large SUV population. There are a few 45MPH (45-60MPH actual speeds) four lane boulevards with luxurious 6'-10' marked bike lanes which are swept weekly, very nice. Still, with this huge buffer of space I've touched paint on a number of occasions well into the bike lane with preoccupied drivers.
Since last fall I've been riding against traffic only on these boulevards and while it's wrong it feels so safe. I've already avoided three serious incidents of preoccupied drivers drifting into the bike lane. There is no way I could track these drivers so clearly with a mirror and afford myself the time for the up on the curb evasive action needed for one incident in particular.
I'd appreciate your comments and experience, thanks.