I don't think Bitcoin dropping in price to the $3 level or whatever level it's at now, means it's the end of Bitcoin. I was very surprised when it had the value of just $1 back April I believe. A currency needs to be supported by real economy, not just speculation. It seems all the speculators are gone now, and Bitcoin will continue its normal course of growing at the pace of its own economy. I believe one of the catalysts for Bitcoin will be NFC payments, because that would remove a huge obstacle for Bitcoin, and it would allow many merchants of real products to sell them for Bitcoin very easily.
Of course, it would help if merchants wouldn't have to be afraid that FBI will come knocking at their door questioning them about it, or if the Government wouldn't immediately freak out about it if its usage explodes in the marketplace. You'd need a president that supports currency competition, too, and might even allow something like this in the market (Ron Paul could be such a president).