Aw, I know how much that sucks. I've seen MCR twice, but it would have been three times if they hadn't been forced to cancel their Columbus show because of the food poisoning; it's all right, though, because their health was far more important than me going to a concert. Still, it sucks knowing that they're even nearby, and not being able to see them, lol.
It's not the end of the world that you're not going. There a 9/10 chance they'll come back. Now, I could complain about a concert I wasn't able to go to in 2003. And I swear to god it was their last here ever since they haven't announced a 30th anniversary tour to NA yet. >.>