Any investment that can be backed by strong fundamentals is a reasonable option for long-term investment. Bitcoin is pretty new to investors and it is extremely volatile. Always remember that the purpose of bitcoin is the decentralized transfer of money and is not a substitute for traditional long-term investment. On records, the cryptocurrencies did deliver returns beyond expectations but you never know when this bubble might actually burst. One may limit the exposure to crypto within what they can afford to lose.
I'm also going to invest in Bitcoin but I realize that this is a very-very risky and if we compare forex and bitcoin, so for forex investments you should have risk capital but for bitcoin investments you should have risk capital of risk capital.
I don't think it is.My understanding is that if you lose your password then you lose your investment.Also if it is hacked and stolen it is lost as there is no recourse to Government compensation. Not to mention the price risk in what appears to be a vastly over valued asset.
Nothing is safe to invest in with all reality. I take more of a value investor position on this one... eventually, cryptocurrencies and Bitcoin will have higher value because of what they can potentially do.