"Why the hell did I sell?"
your not. permabear here. relax, this shit will stabilize -nothing really changed, btc is still 100% speculation driven. lots of hype recently (6months) regarding asic, have to understand btc is still in its infancy, many fundamental problems still need to be addressed.
I'm confident that most btc is horded, and will come back to earth at some point. seeing sub 20.00 btc??? i sure as fuck hope so
EDIT: errrr, not sure how much has change since March 06, 2013 you may be in for rough ride my friend...