Why medical school and not, say, engineering or economics or math? I value having good physicians (my father is one), but medicine is not the only worthwhile hu

Why medical school and not, say, engineering or economics or math? I value having good physicians (my father is one), but medicine is not the only worthwhile human endeavor. Edit: Also, at least in my state (Michigan) there seems to be no shortage of medical students (we went from 4 med schools to 7 earlier in the decade). The real bottleneck is residency programs.