I'm in my third year of a four year computer games development course. I absolutely love the course, the lecturers, and of course my friends at college.
I've been thinking about dropping out because I've been finding the course difficult recently and because I've got a skewed vision of myself, of my motivations and my abilities. It's so easy to think "I'll drop out and then I'll have the time to do this and this and this and this," and much harder to think "If I drop out I'll spend every day on the couch playing videogames and growing less and less as a person."
That's not the way it is for everyone, but it is the way it is for me. If you told me you were thinking about dropping out, I'd ask for the proof that you're not going to waste, because that's such an easy trap to fall into. Dropping out gives you a chance to do the best things you can do, but it gives you the chance to do nothing, too.