Well, you've gotten to the heart of this argument.
One side believes that unconscious, biological urges are the driving factor in occupational choices, even occupational choices that revolve solely around forebrain functions. Basically purely Freudian psychoanalytic theory. And there's just never been, since Freud, any real empirical evidence of the mechanisms of the unconscious or proof that psychoanalytic theory is anything other than a good guess for the time.
Then on my side of the argument, there's the next 100 years of sociology, psychosocial theory, behavioral psychology and developmental psychology, showing how social structures have a profound impact on our choices, on our development as human beings, and that socially enforced roles are so powerful that they can impact our own biology by influencing our hormone levels and by spurring structural changes within the brain. Behavioral psychology is the MOST empirically testable and reproducible framework within psychology and the most able to predict future behaviors, and it states that people's actions are primarily predicated on external incentives, not internal urges.