Bitcoin is freedom of money but I think without fiat, bitcoin won't be used widely! Therefore we can't expect the whole world will use bitcoin, because some people just don't like the anonymity or decentralization. Freedom is one of the main purposes of Bitcoin, but nowadays we see if you want to transact a higher amount of BTC, you have to go through KYC procedure which is against of anonymity! But overall, there is no money that is more decentralized than Bitcoin, so, still, we can use it safely and the most positive thing is no government is controlling or seeing your money!