Creativity vs. Logic and major choices

Left brain/ right brain..  what do I know.
Here's my amateurish statements on it.

Since I'm a college student, I'm looking at majors.  If it weren't for this capitalist system I would have been an art major, but no.  I'm an astrophysics major. It is not that I'm not following my desire to paint pictures of people or scenes and become mangaka or possibly animate something someday.  What I fear about majoring in art is hating it because it has suddenly turned to work.  I'm going to hate drawing because I'm paid to do it.  Creativity and inspiration is hard to come by these days (and will be harder if you're paid).  Soooo.... easier done is probably the left brain fields.  It doesn't take too much to have to do calculations (after you've practiced enough to do them), but it takes a lot of effort everyday to create something out of thin air and have that something be "good."  (because we all know being called "creative" wouldn't mean anything if everything whether masterpiece or not was called "good.")  It takes real personality and creativity to answer "If that bastard next to you were to steal one of your ideas, what would you do?"  and make it funny.  It doesn't take much to solve calculus problems once you've learned them. 

Anyways.  Even though I have declared a major, I am still not set on it.  It is hard to not be a pretentious psychology major or pre-med student, yet I don't blame those who are doing those things. I theorize the reason why psych is so popular is because that topic relates to oneself.  learning Psych is like learning why people think a certain way.

In addition to that, psych (to me) is somewhat inherently interesting.  Along with that is the last but not final reason that it isn't a conventional major subject at school (despite AP), so people read about psych on their own thereby making it not work. 

However, premed majors: pretentious???  maybe... maybe not.  but mostly not.  Being a premed major entails a lot of hard work, commitment, and good intentions.  People are premed for a lot of reasons.  Sometimes it is just for financial stability and sometimes  it is just because your parents told you so.  Either way, the people who go for premed must be aware of committing a certain amount of time to studying and giving up one's 4 years of youth for med school at the least. ... also with the intention to eventually improve someone's health.

So what is my major going to be?  I pondered over everything
(with my philosophy in mind to be open minded and say nothing in the world is boring. It all depends on your attitude towards it/ maybe your upbringing/natural talent/ time spent on that subject.   All subjects have potential) 

so... I'm stumped.  I'm supposedly an INFJ  (that's introverted, intuitive, feeling, judging to you) but I don't know?   What does that tell me about my career choices?  Why does the feeling have to be that what ever choice you make in major will decide your life for now on?  You can change it.  Sure.. you can change it quarterly, but what a waste of time that would be!