CNF Satisfiability (SAT) and its variants are generally considered the central problems in complexity theory, due to their applications in the theory of NP-completeness, logic, verification, probabilistically checkable proofs and parameterized complexity, among other areas. We challenge this conventional wisdom and argue that analysing the Minimum Circuit Size Problem (MCSP) and its relatives is more important from the perspective of fundamental problems in complexity theory, such as complexity lower bounds, minimal assumptions for cryptography, a robust theory of average-case complexity, and optimal results in hardness of approximation