So, without appearing too avuncular, I thought I might share some thoughts because I think I might have a unique perspective on the whole process, here goes. I have an undergraduate MBA in business and went into MC straight out of school. I applied last year to schools and was dinged my top choices and accepted by my last, talk about ego crushing. It's hard enough to get dinged, let alone when everyone in your office went to HBS, Chicago, Tuck, Columbia and Kellogg knows about your troubles, so trust me I FEEL your pain. What was more annoying is that I interviewed these candidates at MBA programs at Columbia and NYU, and quite frankly, you'd be pretty shocked about some of the students that they aren't asking to greet prospective applicants (trogolodytic) - pretty frustrating. Now, to the optimism, re-applying IS an option. It may sound hard and you may be impatient, but part of what these schools are looking for is proven track record of success and that when you have been knocked down, that you have the ability to get back up (hence that ubiquitous failure question). Can't think of a better time if Darden is your true pursuit.
And the value of an MBA question and all of that debt, that business case is left for each person to decide for themselves, but I always think you need to invest in yourself, if you are not willing to do it, why would a prospective employer do it? Moreover, education is one of those investments that's pretty fail-safe if you're investing in a value returning field. The NY Times ran an article about a year ago that questioned the value of education (undergrad and masters, given the costs theses days), a valid concern if you are going into basketweaving
(no knock on basketweaving, but $100K on a masters might not be the best path to success in that profession), but an MBA is a good stamp to put on your resume because it's a screening process. An MBA won't make you a smarter or better person, rather it will show employers that you made it through a rigorous, selective process and came through the other end (GMAT anyone?)
Don't give up hope, take advantage of Darden's/other schools feedback and really take the time to sit down and think about yourself critically and reevaluate. And lastly, if you got into another elite school and did not get into Darden, there is a bit of luck in how they are selecting their student body, they want so many engineers, so many MCs, so many bankers, so many artists and perhaps you were a great candidate but they were over-saturated in your pool - or perhaps they thought you were so qualified you might not accept

alright that's enough, to all: happy holidays, enjoy the time with family and put this stuff on the back burner for a week, happy new years, cheers!