BitCoin is like the internet. It can't die out, as long as there's people on the network, and still accepting it, it'll stay alive.
I think this is the most best way to compare bitcoin for not just falling over and dying.
The internet was bulit on the foundations of the military and incase of a nuclear disaster happening. So if bitcoin can be compared to that I think it is safe to say it would take a lot more than just a handful of hacks to bring it down to the level of being blown out of the earthly known hemisphere.