My main impression was that bitcoin is not something that is going to disappear anywhere in the near future...
Even though if bitcoin would not succeed (which I hardly disagree) the essence of and the idea behind bitcoin and decentralized cryptocoins in general will carry on and will change our lives as we know today.

Edit: there were just so many good speakers and sessions... I was quite impressed, it was totally worth it.

There are already huge investments in to bitcoin, which is one of the reasons I cannot see it as somethign that would disappear...

It was also good to see the butterfly labs machines working gonna order some of those gigahash monsters...