In a big picture sense, I agree that both are integral parts of who I am. However, being that this is a Socionics board where I am interested in applying the system to my life and to others, I have to make parallels between my life patterns and the general foundations of the theory. I really want to know where I fit in this system (i.e., what type and subtype I am) and so this is why I am interested in all this stuff. If Socionics can shed some light as to how my brain processes information, I want to Investigate this and to fit this within this particular model system (even though I now that the system is certainly not the be all and end all of everything...after all, the map ain't the territory).
So you are absolutely right in terms of real world, holistic aspects. However, in terms of the model in general, certain aspects can seemingly be prioritized over others in order to pin down a specific Sociotype.