why college sucks

so...I attend the University of Phoenix - Online...its cool, I pretty much enjoy the format (except for the team format) and just to give an overview of how it works...teacher asks question, I post answer people reply to answer. The requirement is that we have to make 2 posts / day, 4 days/ week....easy enough right? Except that NO ONE answers me! I write my reply, but no one ever replies to me...why is that? I'm not stupid, I hold a very respectable 2.9 GPA (mostly due to my not so greatness in the IT program) and I've gotten nothing other than A's in my Psych classes so far, even getting an A- in statistics...and I hate math! Is it because for them, these are just classes whereas for me...its a passion? I feel strongly about the material, I love learning about the brain and how it functions...I love learning about behavior and emotion and PEOPLE! I think for many, college classes are just a means to an end...for me...its my life dream! I will be the first in my immediate family to receive my Bachelors degree...I want to go on to a Masters program, then become a Doctor...its what I've wanted my whole life! These classes, and the knowledge I'll gain along the way are going to help me to understand the human experience...is that why my answers are longer than others? Why my answers, according to my professors, are so intuitive? Because this is what I really want?