I chose my undergrad college because it had an excellent program in what I knew I wanted to study, and I really liked the campus community. A year later, I decided I did NOT want to study the same subject, and I completely changed direction. (That happens in college to lots of students.)
My new area of interest at that time was one that my college did not have a major in, just a couple courses. As a result, I completed other majors. It never occurred to me to change colleges, I'm not exactly sure why. Probably it was because of my friends and how much I enjoyed campus life there.
When choosing a school, I wish I had thought about: what will I do if I decide to change my course of study drastically/how many fields are there to study? I went to a small liberal arts school and got a great education, but a huge university would have had more major choices. As it turns out, my career and life have been great and I don't regret attending and staying at that college at all, but I point out that I could have had a different field of study available elsewhere when my interests changed. I was very, very sure of my major when I started college, so that - being sure - is no guarantee where you'll end up.
And I should have considered finances. There was a sudden, major shift in my parents' financial situation just before I started college, causing me to have to pay for much more of my education myself than was planned. I could have chosen at least in part based on financial considerations or changed schools when the situation changed. But as I said, it just never occurred to me to change colleges. I ended up working while still in school, necessary at that point. And I took on student debt I hadn't planned on and maybe could have avoided. Not a lot by today's standards, but I worked two jobs for several years after graduating to satisfy the debt.
Along that line, I did get a full-ride offer at a university I had no interest in. But I didn't even visit before turning them down. I do wish I would have at least gone to visit and thought hard about attending that school.
I think those who advise you to look at the entire financial package have a good point . I am pretty sure I would have been happy at another school.