Sometimes. This wasn't one of those times. I thought olorin was a Militant Bicylcist for a moment there, and I *hate* those people. You know, the Berkely-type Bike In The Middle Of The Road Just To Piss Off Motorists - types.
This mentality is a function of the area, not the choice of vehicle. I've seen bikers in San Francisco behave the way you describe; in Arizona, they are people who drive on weekdays.