Form Follows the Real World

I have always struggled with the concept of “form follows function” and how it is represented in the real world of architecture. In theory the technique makes sense because it gives meaning to the ways in which a building functions and how humans actually use the space. However, I struggle with the concept when it comes to actual practice. After working in commercial architecture firms for a few years, buildings are designed more for economics and efficiency, and most building forms tend to be simple rectangles with program fit inside of it. As future architects, should we be following the technique of “form follows function,” or should we, like Eisenman, challenge this notion and acknowledge that form follows a much more complicated assortment of concepts? I believe so.