With regard to the fact that it's necessary to take risks to achieve great success, I think you are right, and the risk-reward ratio for Bitcoin also makes this a very attractive investment at the moment. But going all in one is not the best way to invest, no matter how good the investment.
To make good financial management, it is important to consider the fact that you may need some of that money, and if you have to sell Bitcoin when the currency falls in price, you will be at a loss. Having fiat savings is something that prevents such situations from happening.