The fact that we should all invest our money to bitcoin cannot be overemphasized. The decentralized digital currency is more guaranteed than the centralized system, which is often times controlled by the governments. A people driven currency like Bitcoin can hardly collapse but we've seen different cases where centralized systems get broken down after the country's economy is collapsed. This is why I will always choose bitcoin above fiat. However, when we talk about ease of physical trading, fiat will always go first, considering that it is more widely accepted than the digital currencies.
And for the sake of privacy it is better to invest your money in a decentralized medium because anything centralized is not even helpful at all and when you choose to invest in bitcoin it is more beneficial than just leaving your money in fiat because this one thing our people have taking to be there tradition is to keep there money in banks instead of keeping it safe in banks.
And there other virtual investments that can be considered for those that don't want to invest in bitcoin, there is stocks and other places you can take your money to but its all a matter of choice and I know a lot of people will choose bitcoin for sure because of when it come to the time of appreciation in price it is always doing a very good X for everyone and no matter as little you invest there is hope, you can try other means to add more your assets and the DCA is always available.
And no matter how we love bitcoin we still need fiat and the most important thing is that when you know how to make use of your money by investing it, always trying to double your money is what makes everyone a survival. Because even in term of rating they rate based on assets.