Although there are certain risk factors involved with Bitcoin but it's not been limited by that and most likely will tend to survive and thrive in the future,moreso reasons why Bitcoin will likely survive are thus;
1. Decentralized Nature
2. Security
3. Limited supply
4. Potential adoption.
The main reason for Bitcoin to survive is because it is decentralized. There is no body that can claim to be the father of Bitcoin apart from its true father, Satoshi. I was reading a very old thread and one person said in his comments, "To bring down Bitcoin entirely, then Satoshi needs to be captured". Since Bitcoin is not being controlled by anybody in particular, like the way this forum is being managed by a known moderator, then Bitcoin can not be brought down.