I have a few friends in the process of getting either their
  Master's or PhD's in theoretical physics right now. Two are
  women right here on FB I'm friends with. It's a tricky field if
  you want to work in it directly job-wise, but you can command
  nearly double the salary of someone with an MBA if you have a
  PhD in Theoretical Physics 'cause damn, it looks good to have
  someone like that working for you.   [I was gonna do it in
  college - Theoretical Physics - back in 1990 - but the guy who
  gave the prospective-students talk called "Quantum Mechanics For
  Millions" that so inspired me was on sabbatical that year, so I
  chose child psychology instead. Didn't finish but in any case no
  regrets either 'cause I suspect I would've ended up working
  somewhere on string theory... which wouldn't have been all that
  bad, but there was a glut of people working in string theory at
  the time I would've graduated at the right level.   Yeah, I
  think that's why they keep it. I mean, there's no NEED for the
  mathematical language to be so obtuse - it's just tradition.
  Helping my 10 yr old nephew through common core math today;
  compound fractions simplification. What kills him - which killed
  me back in my time - is the whole "show your work" part. He can
  stare at it and get the answers right but showing your work the
  way THEY want to see it is what kills him. I spent more time
  listening him rant about the unfairness and ridiculousness of
  "show your work", repetition, and scheduling equal amounts of
  homework on 'off days' than him actually doing it. He was right,
  which is why I listened.   Yeah, at this point if I had the
  resources to go back to school, Neuroscience would definitely be
  hot on my list, particularly Cognitive Psychology. It has the
  best mix of 'story explanation' and measurable stuff to help
  people understand what's going on up there.