Do you know why bitcoin going so much down?
1. people are investing in bitcoins currently , Investors start investing money in Ripple (1.2$ current) and bitcoin cash (3600$) , Dogecoins (0.008$)
Ripple has no real future. It's popular only because of its recent pump but people are short-sighted and forgot that it has been going down for months.
2. some short term investors start selling of their bitcoins to recover the profit. they will buy again when it come low.
This is the main reason.
3. bitcoin Rise and Drop is a part of game , It will down and Come back again ,
In recent news someone bet that bitcoin price will reach 50,000$ Next year
I'm sure that it will.