Good points, up til this paragraph which is way off in my opinion...
I foresee a collapse of BTC value when the first large financial institutions release cryptocurrencies of their own, which are actually backed by tangible assets like gold or by fiat currencies. Those will not be ideologically appealing to most people who post here, but the business model makes perfect sense. The fear that the public and media have about BTC is that it is an attempt to create wealth out of thin air. Having a trusted bank issue individual coins representing actual assets will allow them to be more valuable than BTC is today, making them more attractive to mine. These bank-backed cryptocurrencies would look to many like the 'best of both worlds': the guaranteed value of a traditional bank note with the transparency and irreversibility of distributed block-chain logs.
Bitcoin has a value at the moment because it is "base money". That's to say, it is at the end of a chain of trust (i.e. not 'backed' by anything).
Money which has to be 'backed' by something, by definition, is not base money and so has no intrinsic value of its own. Bitcoin has intrinsic value because it works as a unique token of value with a high resistance to counterfeiting. Cryptocurrencies which have to be "backed" by something are by definition of far less value than ones that are not and so I think its unlikelt that banks will start to do this.