Yes, crypto currency is one of the best long term investments. But because of its high volatility and fluctuations, investing without knowledge can be pretty risky. The extreme volatility of cryptocurrency is a key characteristic. While you could make a lot of money, you could also lose everything. Furthermore, there is no guarantee that a cryptocurrency will remain operational in the long run. For example, only seven of the top ten cryptocurrencies by market value in 2013 are still operational today, with bitcoin remaining constant. That is why investing in cryptocurrency can be profitable in the future, only if one has knowledge about it, and knows how to accommodate to the changing market.