I think, If you have 1 bitcoin in your wallet after five years,you will become millionaire. Bitcoin has potentiol and growing in rapid manner.Do you the price of bitcoin in Jan 2017 is just 1000$ and Jan 2018 is around 10,000$.Just imagine the growth of bitcoin,I had suprised by seeing the growth of bitcoin. I think Even some of Crypto currency have good potential as like bitcoin, one is Ethereum, than litecoin and Waves.