We all like to think of ourselves as individualistic. We'd like to adopt the mantle of non-conformist. After all, conformity implies a lack of thought or free will, a weakness of character that buckles under the weight of social expectation. Conformists are, at best, sheepish non-agents that skitter along without consequence. At worst, they abandon their conscientious and adopt phrases like, "I was just following orders." Or so we would like to think.
We look around on a crowded street, in a theatre, on a train platform, or on an elevator, and not only do we see a high degree of conformity among people's actions, most likely we can also observe our own actions as being equally conformist. What does that say not only about people, but about ourselves? Imagine walking on to an elevator and turning around with your back to the doors and facing the other elevator riders just to be non-conformist. Though that may be a humorous social experiment, it is such a subtle but obvious breach of social behavior that it may well be very intimidating to the other riders.
So, it is not hard to see that certain social situations call for conformity to social expectations. But this order typically has more to do with the flow of masses of people in somewhat confined situations. An integrated and ordered motion helps us to be collectively more efficient in all of us getting to where we are going. Additionally, the more crowded people are, the more they withdraw into their own personal space. Note people's angry glances at the self-absorbed loud cell phone conversationalist on a commuter train. In this case, non-conformity is at the expense of others' comfort.
But, as with many arguments, the phrasing or context of the discussion is off the mark. This is not so much a question of conformity as it is a question of adaptability. We rightfully adapt our behavior to the circumstances that surround us. The social order is not simply a matter of convenience, but a way to elevate our capabilities in an otherwise chaotic environment.