VERY true.  A's are really not that difficult to get.  Sure, science courses are hard, but they are manageable.  I wont lie, I would absolutely detest an english course.  Not because I couldn't figure out what to do, but because the material is boring to me haha.  Just wanting the grade isn't near enough.  Granted, the first couple years of college, thats mainly all I was trying to do.  We hadn't gone into much application, it was just basic biology and chemistry. However, my second semester junior year and start of my senior year have been INCREDIBLE.  My grades have never been better.  Why?  I'm starting to connect everything I have learned previously, and see its real world application.  Taking Cell Biology was phenomenal, because I learned so many molecular pathways within the cell, along with how other chemicals could alter those pathways.  Come to this semester, I'm in human pharmacology, biochemistry, and neurobiology and everything is tying together even MORE.  Pharmacology is truly incredible, it's a lot to swallow as about half the class is graduate students, but man is it fascinating.  My brother is currently in veterinary school, and he admits he never felt the way I do about science, and it shows my decision for medicine is probably well founded.  I could branch out more, and take different courses, but I've found something I really enjoy learning.  I know many other subjects I enjoy, but none have the grip with which these advanced science courses hold me.  The connections forming between everything else I've learned is one of the greatest feelings in the world in my opinion.