I get where this is aiming at, but when you take the sexual and gender identity dimension out of the equation by choosing the example of a race car driver, you are ignoring major issues that are specific to crossdressing (or at least to some crossdressers). So the reasoning is flawed from the start for many of us.
Also, referring to the practice of race car driving as something defining the identity of a human being is an assumption that needs some evidence first. And so does crossdressing. As a crossdresser I don't feel like the dressing is defining me. At least no more than my love of music or any other thing I like to do. I know, I can't quit dressing. But I can't quit listening or making music either.
