The structure and mechanism of GroEL/GroES in protein folding are about as good as it gets in biochemistry. I think these proteins can be viewed as a litmus test to see if biochemistry is something that grabs you, that excites you. If you don't find these proteins, their evolution, and their mechanism amazing, then maybe biochemistry is not your "thing".
Using an analogy to another field, consider a statement by Socrates in Plato's Euthyphro, and describe in Rachel's book, Elements of Moral Philosphy:
Is conduct right because the gods command it, or do the gods command it because it is right.
British philosopher Antony Flew states
"One good test of a persons aptitude for philosophy is to discover whether he can grasp its [the above statement] force and point."