Here are my thoughts . . . riding a bicycle is a great way of getting to work and getting some fresh air and exercise. Cycling is a hobby/activity that I spend a significant amount time on between riding, maintenance and repair, and buying more stuff. I wear what works best for me, and don't really care what others think of how I'm attired.
I don't know any other bike commuters personally. So I wouldn't consider myself part of a "subculture." I commute by bike and car every day, and have nothing against cars as a whole. One aspect that almost every bike rider has in common is that we face very dangerous car and truck drivers on a daily basis.