Bitcoin will not fall to nothing because too many companies like banks,firms,organisations,politicians,the top richest people in the world,the biggest countries in the world and many other are involved in bitcoin and they dont want bitcoin to lose own value so much.So bitcoin is now more popular then dollar,euro,rub,and many other fiat currency but also more popullar then other altcoins like dash,dogecoin,etherum,monero,zec,burst what means that is not really easy just to destroy bitcoin price what some pupil think.