At this point I don't see that there is any reason to give up. It is true that you suffered a massive catastrophic loss but bitcoins grow stronger and stronger with each passing day. They are also at a low point. I would not get back into buying new mining equipment at the moment, at that tends to only be a great investment with each new generation of ASIC's coming out, but given their price range buying some and holding seems like a good plan. How much experience do you have buying and selling on the market?