Earlier quoted context omitted.
Oh, you're right. But when you have to cycle to get to work whether you want to or not, its easier to get that exercise in. I'm not a leisure cyclist. I don't dress up in spandex and ride an expensive bike. In fact, I have difficulty containing my derision for leisure cyclists. I know that the equipment they use has utility, but it also signals: I don't have to ride a bike. I have an expensive SUV at home, and I didn…
I am having a hard time following what you are trying to communicate. Apparently some one performing an activity cause it is leisure / you come from a poor neighborhood / they can afford nice(r) things, invites your derision. Did I understand you correctly? I am not sure how those factors are related but apparently they are to you. Must be hard to find someone / something which escapes your contempt.
It is not simply a matter of some people getting to do what they enjoy. It is the system of symbols tied to a specific activity. Everyone likes to ride bikes, poor, middle class, and rich. How do the middle class and rich make sure that no-one mistakes them for the kind of person who cannot afford a car? By the price of the bike, and all the specialized equipment they use along with it. Of course that equipment has practical utility--no one says that it doesn't--but that equipment is playing another, probably more important role as a signal of status (if you don't believe me, go biking with your cyclist buddies wearing jeans and riding $400 bike.)
So why is it a problem? Because it creates an environment that is not positive, possibly even dangerous, for other cyclists who cannot afford to, or are not willing to, participate in that cycling economy. It isn't really that complicated. Let me put it another way. Who do the police stop when riding through the neighborhood. The cyclist on his or her expensive bike, wearing their expensive equipment, that practically scream: I'm participating in a lifestyle activity? Or the cyclist on a cheap bike, wearing jeans and a t-shirt? Maybe with the wrong skin color. The answer quite obviously is the second.