From a very early age, I think we learn that we don't want to be "different". Now that is not the same as being the "same" as everyone else though. You don't have to be just like the others in your group, but you definitely don't want to be different.
For a variety of reasons I decided to ride my bike to work today, which really made me feel different.
From the get go, it seemed odd/different. I walked out with my keys in hand, going toward the car, but decided I had to give it a try and unlocked my bike instead.