What goes up must come down - that's the buy/sell pattern of any trading.... the difference with Bitcoin is that the pattern is very erratic because there is not enough liquidity in the market (ie. everything other coin by large is still paired/bought using Bitcoin). With new money (USD$) coming into the system, expect the wild swings to be tighter.... 2018 will be a good year for us miners, in my humble opinion.... expect 100K BTC easy.

Note: pump and dump will always be there, just like stock market, even more in crypto markets because its not fully regulated like stock trading etc. I think the only real threat to Bitcoin is .....

a. Bitcoin Cash

b. Privacy virtual currency

c. No adoption

d. Bitcoin her self...