You guys wanted deregulation and decentralized currency. This the result. Bernie Madoff is sitting in prison because all money transactions can be accounted for but in the bitcoin world once your money goes to another person that's it you can only pray the person delivers.
This has nothing to do with the currency. That is like saying "The dollar is doomed because Lehman failed," "The Euro is doomed because a bank was robbed," "The Euro is doomed because Cyprus did a bail in," or "Gold is doomed because pirates have stolen Spanish gold". If you do not own the private keys, the coins are not yours. Just like if you hand twenty Euros to the bum on the corner and ask him to hold it - you have to trust the bum.
If you are dealing with someone you do not trust, you use this really
new idea called "escrow". /sarcasm