Once the price of Bitcoin remains at around $6000, some investors will suppose that Bitcoin can not make profits more so they will leave out of Bitcoin. That is the bad situation which noone wants to happen with Bitcoin. Bitcoin is to invest; therefore; the price of BItcoin should be fluctuated.
Bitcoin is a currency, and it is better for businesses if bitcoin have a more stable price. Only speculators and those who wanted to get rich quick will be saddened if ever bitcoin reach a state where it is stable in terms of price.