Stop worrying about what's going to make you the most money and figure out what you enjoy. An MBA that hates his job is worthless. A computer scientist that isn't passionate about math and theory is worthless. An IT guy that isn't obsessed with all things tech will never be as good as the guy that is.
Figure out what you love doing and do that. If you really love it you'll be better at it. The best people in any field always make plenty of money.
As an aside- the last thing this world needs is more lawyers. The second to last thing this world needs is more MBA's.