People like coins and cash to be liquid, stable, and ultimately not a ponzi scheme (by this I mean growing by an ever slowing amount, that gives added value to those who mined early and held, punishing any sizeable withdrawal, dividends paid only due to more outside money coming to the fund..).
Too many people have taken to investing in it with the attitude that it always rises, yet in a classic characteristic of a bubble backed entity it doesn't take much to crash the value of the asset.