This is an early stage in the development of the digital economy and therefore useful projects will eventually give even more profit
We all are lucky that we are involved with bitcoins and altcoins in one way or the other. The future is of the bitcoins and digital assets. I also buy the bitcoin because i know one bitcoin will be worth millions in the future. Remember it just the start and no one can imagine how high demand and price of bitcoin will increase.
I do not buy the cryptocurrencies for fun - it will be a very strange choice for it. The crypto is one of the best investments. We have come to the new era of the blockchain, and BTC and some alts are our future currencies.