Even many prediction of Bitcoin will going to $20,000 or more but remember this is only prediction so that mean about 70% can become reality but about 30% can be wrong, so just make sure use about maksimum 30% of total your money to make invest in it. All most popular cryptocurrency like ETH, DASH, NEO, XMR, XLM, BTC and more in the long term has big possibility to growing because currently the volume of crypto still small, and in this world just about 1% of total pupolation know and understand how does crypto work.