I really can't stand "these people" posts.
I like seeing transportational cyclists of any sort.
I observe that most of the idiot-stunt bicyclists I see are obviously affluent college students.
I consider myself to be "forced onto the bicycle", because I can't afford to park my car in downtown Boston and because the Green Line makes me want to kill.
One other thing about Boston: the majority of people who post in this forum seem to be in a situation where using a car for transportation would be quicker, more convenient, and cost little beyond the gas (e.g., ready access to free or very cheap parking). For these people, transportational cycling is a true choice: you have an easy out. Around Boston, OTOH, most transportational cyclists seem to be riding to save money, time andaggravation over what they'd have to deal with using a car or public transit. It's not just a healthy and virtuous alternative to using a car. In that sense, I feel a lot more kinship with someone who can't afford to buy a car than I do with a yuppie who's riding a bike to work just because he/she feels like it.