My, what a chatty bunch. My $.02: There is always safety in numbers such as cities(Montreal, Vancouver) which have many bike commuters. With so many cyclists, drivers have no other option but to show courtesy. They have a mix of roads with sharrows, separated(plastic cones) bike lanes and bike paths. Each offers a different comfort zone for cyclist. Once a cyclist feels good on a bike path they migrate to a bike lane (cone separated) and so on. To expect anything different is crazy. A city needs ALL of these to slowly educate the bicyclist. I also agree with Barry, if the city/state/fed continue to legally back cars over bikes, then bike commuting will always be for the foolhardy. Without laws for our safety, we will never grow in numbers.
Baltimore also has the problem of very narrow streets. Tough to get 2 lanes of cars and a bike lane through. I have always wanted to see a few streets turned into bus and bike street only. They have this in Minneapolis and it was a sea of walkers, buses, and bikes.