The big lie (and this applies to teenagers as well as those in their 20s) is that it matters where you go to school. It doesn't. What matters is what you take away from your experiences (including school), how well you perform what you set out to perform, and how you interact with people in the world. (Well, all that plus luck, which is sometimes difficult to come by.)
Well, this is interesting.
I've been feeling that where I chose to go to school was the wrong decision. Tuition is 4x more than if I were to have gone in state, there is a lack of beautiful scenery that abounds at places like University of Colorado - Boulder, and I feel as if I haven't made the deepest of connections. But more and more recently I've been discovering the truth of what you're saying. Despite the discontent, I like the person I am and am still developing into. Had I gone to another institution, the outcome may have been vastly different. Like Pumba once said, "you've gotta put the past behind ya."
What's done is done. It's nice to know that there's no foundation for being upset about the decision I made.