Many things can go wrong for bitcoin:
- some large govt makes makes it illegal (eg US, China, EU)
- exploit in protocol (unlikely)
- exploit in deployed code (likely)
- a better (more features) coin appears that makes people switch
- another GOX security breach
- SR gets taken down by the fed
- 51% attack
- coordinated cyberwarfare by funded opponent (governments).
- people finally discover how hard it is to hold on to their coins in face of determined hackers
(i.e. not the script kiddie level hacks we've seen so far), but stuff at the level of stuxnet
etc ...
The future is unpredictable.
By definition.
I think you forgot the most important one. People get bored, sell the btc, and go do other things.
Price of btc falls and this miniscule group of people keep proclaiming btc will go big this year.
LOL my father said at 6 point crazy: "i will buy again, when it comes back down" i told him "ya i really dont see that happening" he says "Ya ya people will get board and sell soon."
Right....
