All investments have risk. Don't pull all your money because bitcoin is still considered as a volatile investment. Its better to separate your investments in different kind of business like banks or buy a property which also have a secure return of investment.
I agree with you. It is better to have a diversification process and separate your money into different type of investment so the risk will not be that high and it will be just lower than the average risk. Diversification is the best thing to do and it should be done for the potential investor to avoid huge losses and to get a good cash flow.