Caveat Emptor.

Even at $70 per BTC, there are still an incredible number of coins out there that are looking at a 10x - 20x gain on paper, or more.  If the market continues it's downward trend, expect to see some of the remaining coins that were purchased for $4 - $8 start to come out of the system, which in turn exerts even more downward pressure on the market.

I personally think long term bitcoin is a force to reckon with.  Bitcoin's time will come, it's just not here yet.  As transactional velocity, BTC business ventures, and overall infrastructure build out picks up steam over the next 12 - 18 months, the real benefit of bitcoin will be realized.  Namely that it's a cheaper, easier, more efficient way to conduct online commerce, exchange funds between individuals, etc.

For those that are currently holding a lot of paper profit and are interested in divesting some of your coin, I might suggest spending some of it instead of exchanging it out.  Build yourself a new gaming rig at bitcoinstore, for example.  Do what you can to keep the bitcoin ecosystem growing and thriving.  Long term, spending bitcoin on goods and services will do more to your bottom line than exchanging it out for fiat.