Back in the days of $1200 coins, I recall most posters saying "sub 1000 won't happen, there are way too many people waiting to buy at such price level".
This phrase was repeated all the way down to where we are now: "sub 700 won't happen", "sub 600 won't happen", etc.
Try googling the word "sentiment". You might learn a thing or two.
Double and single digits will happen, btw. They'll happen in 2015. And price won't magically rebound. It'll stay low for the rest of Bitcoin's history, reflecting the true value of this blockchain experiment.