IMHO you're pretty pessimistic. We're at "peak coin" atm. We're at the beginning of a 4 year cycle until block reward halves. This means we're still in the middle of the bitcoin gold rush. Also recent developments showed how open to influence from the fiat currency economy the bitcoin market really is and one could argue this price escapade of the last month is due to the developments there (Cyprus etc). When the financial market is shaking, bitcoin won't stay untouched.
Not bitcoin has to mature. Its the market and the users that have to. mt.gox, the "bitcoin central bank" offers poor service, so there'll be alternative soon. The trust issue can be easily dealt with if the exchanges are real companies with clearname people behind it who are actionable in case of misconduct. The community adapts to the changed circumstances and in this we're much more flexible than established markets. If fact, bitcoin is more etablished than ever.
as for the "ruined credibility": some new users learned their lesson of "no you won't get rich fast" the hard way. many of us did. The wiser ones don't blame it on bitcoin but on their own stupidity. I truly recommend this approach.
Bitcoin is here to stay. Not only is it widely recognized and accepted in teh interwebs, but its also accepted by the criminal community and no matter how disconcerting this might be for the regular user, its actually a stabilizing factor.
I find it a bit ludicrously to declare the death of bitcoin every time such a bubble bursts. We knew that 200 bucks was an ridiculous exchange rate for this time.
Lots of real money was burned in the recent days. A harm to the poorly informed investors? Sure. A harm to bitcoin? No way.
I think I'm being realistic, not pessimistic. Unless Bitcoin can mature into something "real" and "dependable", then it will always be relegated to the "niche market" of technogeeks. It's been 4 years already, and it still hasn't matured. The entire Bitcoin market is basically controlled by some teenage kid running Mt. Gox on what is probably a computer in his bedroom. Does this sound like the future of currency to you? It's been 4 years already, and nobody is really using Bitcoin as a currency to buy anything real or do anything important. Where are the REAL currency exchanges, run by REAL businessmen? Bitcoin-24.com popped up momentarily as an alternative exchange, and then that got shut down immediately. People have lost real money (I lost money myself!), but because of Bitcoin's anonymous nature, nobody knows who is running off with whose money. Where are the REAL websites supporting a Bitcoin payment infrastructure, such as an eBay that only accepts Bitcoins or an Amazon that only accepts Bitcoins? I'm not being pessimistic, I just honestly can't see why anybody would choose Bitcoin for anything at this point, outside of 2 things:
1. Cheap international money transfers to people that you already know & trust (not anonymous transfers).
2. Criminal activity.
For everything else, we have Visa, Mastercard, and American Express.
I know that we're all big fans of the philosophy & ideology of Bitcoin, but if we look at this from a business point of view, Bitcoin is dead in the water. Ideologically, Bitcoin makes a lot of sense and is very exciting. But in the REAL WORLD of REAL PEOPLE, it fails miserably.
None of these Bitcoin exchanges inspire any confidence. They're all amateurs and it's risky using any of them. Probably Mt.Gox is the least amateur of the amateurs at present but that isnt saying much.
The whole Bitcoin infrastructure leaves a lot to be desired. Despite all the talk by the geeks about it being safe, it's highly risky, there are wallet breakins and thefts all over. The address system is cumbersome and a deterrent to the average person using it. The Bitcoin system is too complex for ordinary people.
The people most enthusiastic about Bitcoin seem to be either computer geeks or fringe libertarian oddballs.
I'm not saying all these drawbacks can't be overcome in future, but that is the state of things as I see it right now.