I initially attended college because of a financial obligation--the state would pay for my tuition. But I didn't attend college until a year after graduating high school, at which time I went to a huge university and loathed many, many things about college in general. I attended a community college for five semesters afterwards, and then returned to my initial university and have attended three consecutive semesters there since.
My first few years in college were aggravating because of my refusal to acknowledge any value in the school system and the fact that most of the general education classes seemed almost completely irrelevant to me--I constantly felt that I was pursuing a goal that someone else was imposing on me, not a goal that I had established for myself. Nor did I have a good sense of direction or a good understanding of what my interests and strengths were.
Four years after beginning college, all of my general education courses have been completed and I have a much better grasp of my strengths and interests. Consequently, I've been thoroughly enjoying the classes I'm currently taking.
I've made very few friends in my college career with no regret so far. I have never attended, nor will I ever attend, what some people refer to as a party. And for some reason I've only encountered one NT classmate in my entire college career--SJs abound, along with the occasional SP.
I have not abandoned my Christian beliefs, in contrast to the apostate experience that some people undergo upon beginning college. If anything, my faith has been bolstered in ways, and for reasons, that I never would have anticipated, although I've become very critical of much of contemporary Christianity in this country, if there is such a thing. Additionally, the naively optimistic outlook I once had of humanity has disappeared.
I would say that the turning point in my college career occurred when I realized my potential and independently researched careers to an extensive degree. When I finally realized that college could have value for me, my perspective and output in school completely changed.
My advice to other INTPs who are beginning college is this: The case is very likely that much of what you've heard about college is reasoning created by SJs for SJs, not NTs for NTs. If you have doubt about what your strengths and interests are, then take the time to discover them instead of unquestioningly obeying societal pressure to begin (and finish) college immediately after high school. It may take years for you to attain a self-understanding great enough to warrant a commitment as serious as pursuing a four-year degree. We have been reared in a world that is mostly oblivious of the NT type along with its needs and strengths, and thus SJs and SPs have a huge head-start on young NTs with regard to self-understanding.