It depends on what kind of investment you are looking for. Bitcoin is very volatile but the long term fundamental prospect is very attractive. Because there is a finite supply of Bitcoin available, unless something catastrophic happens and Bitcoin is replaced by another cryptocurrency that serves the same function, the prospect of Bitcoin increasing in value over time is quite good. There are also many unknowns. If you buy a bitcoin now and hold, you are either going to have nothing to show for in 20 years, or it is going to be worth a fortune. Depends if you are willing to take the risk.