If Mining BTC Even with free electricity cannot pay the mining equipment in a year, that will be the doomsday of BTC, 2000$-2500$ is the limit.
5k usd per btc has a lot of complain already how much more if it will fall for more? Anyway, whatever happens to bitcoin now I should hope that it will not resort to ending the system. I was just about to have some fun. And with the huge market price fluctuation I can't be more happy now. It seems like a doomsday today and onwards on the bullish market.