Now & After 6 years from the creation of Bitcoin by Satoshi Nakamoto , what's the worst case scenario that could happen to Bitcoin and make it dissapear once for all in your opinion , personally I guess it will be little bit hard to get 3 billion USD market-cap business destroyed just like that .
The only thing that comes to my mind is having some major bug that would cause the people to lose their coins. But if this hasn't happened in 6 years, I don't see it happening now neither.
If Bitcoin would have to die, I see this possible death as rather slow and painful, not a quick death.
Also I don't think that if some country would ban a Bitcoin that this would destroy us. You cannot destroy decentralized movement so easy!