Its hard to predict whether bitcoin is going up or down next year, the chances are 50-50 but most of the speculation will be uptrend, don't expect there will be hype and huge rising like 2017, the situation already change, but I am positive 2019 will be a good year for crypto, don't too focus on alt because most of the alt got a short life period, focus on strong crypto like btc eth and xrp
Based on the facts I have seen so far, it seems that what you say is worth justifying, because the current market situation is getting darker and more difficult for us to predict. I don't know, what will happen to the development of the next cryptocurrency.
It's undeniable, BTC ETH and XRP are the strongest coins in its development, all three still have a wide area and great opportunities to grow in the future, although the current price has crashed, but I'm very optimistic and sure that cryptocurrency will recover.