Medicine was certainly intended to be a career. I wanted to become a psychiatrist, an adolescent ambition which, of course, is fulfilled by many psychiatrists.
If the material is inspiring and motivates you, then it doesn't really matter what it is.
Tell me what you feel in your room when the full moon is shining in upon you and your lamp is dying out, and I will tell you how old you are, and I shall know if you are happy.