[harwoodr]

I've expressed an opinion about bitcoin (and any other cryptocurrency) that isn't popular, but I haven't heard any compelling arguments against:

It isn't a currency, it's a transport mechanism for currency.

If you approach it from that perspective, the current value of bitcoin is irrelevant. Sure, if a business wants to be paid in btc, then they'll have to dynamically price based on the current value of btc and then immediately convert to fiat...

That also makes it a pretty awesome way to do cross currency conversion without much overhead. Want to pay euros for a product priced in US dollars - (somewhat) easily done with btc... and without (some) of the overhead/fees involved in traditional banking/credit cards.

Now, if you're looking at it as an investment - well, enjoy the ride... I could have bought 15 btc in Feb 2013 but instead I bought a bitcoin asic miner - that was promised to be delivered by May... and it showed up in October. If I had bought the btc, it and sold it in Nov/Dec 2013... well, I would have been much happier than I was simply breaking even on the miner. (120x happier, in fact) :)