Yes what happens when Fear, Uncertainty and Doubt turns to facts?
That can always happen, but it can also become a self-fulfilling prophecy. When does being cautious turn into outright paranoia that feeds on itself and infects others? If you look for bad news you will always find it, if you look for positive news you will find plenty of that around as well. Most of us will be biased towards one or the other and try to think of things that reinforces our own position. In the end nobody has a definitive answer, but those who can think with a clear head and stay very flexible one way or the other usually have an edge. But they can be wrong as well.
There is only one bad news. => crack RIPEMD-160 => crack SHA-256 => crack ECDSA ... (I think/believe impossible) :-) so until somebody is able to compute private key from your public bitcoin address, bitcoin will only rise.
The only way would be to generate billions of keys per second, and hope that one of them matches up with someone else. xD
It would still, with a billion keys per second, take a near eternity.
and what about a trillion keys per second?
10,000,000s of years.
EDIT: Looks like my estimate was too low.
