Good job pointing out the advantages to bike lanes. But I can see a couple disadvantages in the picture:

1. The silver Chrysler (or whatever) is parked in such a way that bike lane users have to travel in the "door zone." (EDIT: At least that's how it looks in the picture--but you said there is room.)
2. Looks like lots of driveways and (presumably) side streets empty into the bike lane. Some motorists don't watch for traffic in the bike lanes, but most do watch the motor traffic lanes.
3. In many states, you are required to use the bike lane if there is one, but you can use the regular lane if ther is no bike lane.