Oy, friend. I'm sorry to hear that. I was rejected from one of my very top choices not too long ago, so I feel like I can relate a lot. But you're obviously totally awesome judging from all the places that want you, and when it comes to folks at your caliber, it's more apparent than ever that the process is a bit of a crapshoot. There's got to be a lot of good news waiting for you yet this cycle -- I'm sure of it!
Hey, man, I'm really sorry. I'll bet, though, that every bit of those four years will pay off one way or another. You won't regret it for long. And it's not too late to live a little more. If you're really straight out of undergrad -- I mean, your best years are just starting.