I graduated with an Animal Science (Equine Emphasis, pre-Vet) degree and absolutely loved every minute of it! It was a very hands on degree where I went to school (Virginia Tech) so I had classes where we trained babies, were assigned a broodmare and took care of her during her pregnancy/birth, took riding classes, and competed in IHSA shows, etc. There were a lot of research opportunities available and a Business route you could take if you weren't interested in the science aspect of it all (which I would recommend unless you want to be a vet). Some things to consider about doing a 4 year degree instead of starting off at a CC is that even my first year during all of my general classes I still took an Equine Industry class and an Intro to Animal Science class which kept me excited about what was to come. Plus, I was in a classroom full of people who loved animals and wanted to do the same thing with their lives as I did. A lot of my friends now are trainers, riding coaches, vets, etc. And there were tons of different clubs and organizations to join that were directly related to horses. College is a great time to really figure out what you want to do with your life. If you take a lot of business classes along with your degree (maybe even minor in it) I imagine you'll be marketable enough to get a job in the non-horse world. Besides, I hear companies these days are more interested in work experience anyways. Plus, a HUGE majority of the people out there do nothing that is remotely close to their major!
I have to agree with Dumas' Grrl, horses are obviously something you're passionate about. Seems to me that girls who are passionate about horses past 16 are always going to be. Even if I end up changing jobs one day and doing something completely different I still won't regret what I majored in.