Chicago is becoming more and more bike friendly with each passing year whether the general population likes it or not. In lieu of our ailing public transit system, it also becomes a more viable form of transportation when no one seems to be able to manage our trains and buses effectively while our legislators downstate don't care enough to properly fund either our city transit or the regional transit...but I digress. I don't think I even need to mention gas prices.
Not only are you contributing positively to the environment by cycling you are also contributing positively to yourself by getting out and exercising. I don't think it's too much to ask for drivers to pay attention when pulling in and out of bike lanes or opening their doors after parking. If I wasn't hyper-aware of my surroundings while biking I'm sure I would have been creamed on the pavement by now due to drivers
just not paying attention to what the fuck they are doing. I don't know many cyclists who ride around the city with their heads up their asses, but I know plenty of drivers.
Yes, some cyclists ride like jackasses (re: bike messengers), but most obey the traffic laws. Of course, I'm in the camp that doesn't see the big deal about treating a traffic light as a stop sign if there isn't any traffic or rolling through a stop sign if there aren't any cars waiting at the intersection. I can see how this is a problem for some people, but as long as a cyclist isn't blatantly blowing through busy intersections or exhibiting other dangerous behavior I don't see a problem.
As cities become more dense, you're going to see more cyclists, so drivers may as well get used to it. Share the roads.