Actually, seven years ago I thought I wanted to study Christian theology: (as I've mentioned before, I had a very religious upbringing). So, I started attending a theological college and ended up staying for almost four years. That was about how long it took me to figure out I didn't actually believe in most of traditional Christianity. I also began to doubt that there was (or even could be) any sound epistemic basis for believing in the authority of scripture.
During the years that followed, I very, very gradually came to believe that the scientific method provides a more certain means of acquiring knowledge than faith does. This was not an easy process: I became profoundly depressed, for example, when I realized I couldn't be certain whether there was an afterlife. (That might sound silly, but when you've believed since childhood that you will literally live forever, and then find out you might only get eighty or ninety years, it hits you pretty hard). But eventually I concluded that, as Cat Faber puts it in The Word of God, "humans wrote the bible; God wrote the world." And that if I wanted to search for truth, I'd do better to study the natural world than scripture. And as I spent more and more of my free time devouring science articles on Wikipedia, I fell absolutely in the love with the awesome, beautiful universe in which we live. And so, here I am today, about to start a four year degree with a major in astrophysics! Yay!!
Needless to say, I am deeply grateful to have changed my way of thinking!
[EDIT: Just to clarify the terminology for the rest of the world: in Canada, a university is an academic institution, whereas a college provides vocational training. They're not the same thing.]