From a correspondent in Portland:
Among my peer group [educated people in their 20s-30s] I see a "mono-modal" fixation on cycling, very similar to the attitude many drivers have that their primary mode should be everyone's primary mode. It really is remarkable how many young, affluent, educated folks living in inner Portland see cycling as the only legitimate travel mode for all people everywhere. My [peers] basically scoff at the idea that I might prefer to take the bus to and from school when it is rainy or dark out. I see walking, biking, and transit as three completely complementary modes that support a car-free or car-light lifestyle, but I'm realizing that in Portland at least there is a large group of people in the cycling community who see both cars and buses as the enemy, or at least not an option worth considering or supporting. This might help explain TriMet's underinvestment in the bus network, since politically active young people do not support transit.
I've been away from Portland too long to have my own impression, but if this is true it's certainly unfortunate. While there are some conflicts between bicycles and transit in road design, I have always tried to accommodate both. I don't necessarily believe bike lanes can be accommodated on every street, any more than transit is, but I do think both cycling and transit deserve and can have complete and functional networks.
How common is a monomodal fixation on bicycles? If so, why does it occur?
There's nothing wrong with cycling advocacy, or advocacy of any mode, until it becomes hostile toward other aspects of the full sustainable transport package. Wouldn't advocacy for the suite of sustainable transport options (walking, cycling and transit, supplemented by carsharing etc.) be more effective than endless conflicts among these modes?