If I have Bitcoin and the real estate firms accept it as payment, I will gladly choose to pay with it. The process of changing the Bitcoin to fiat before using it to pay for the property is expensive, time consuming and sometimes risky. It will also save me the stress of going through bank procedures, which makes the transfer of huge sums difficult. In some cases, the banks are mandated to report any financial transactions that exceed a certain amount to law enforcement agencies. Volitility, legal issues or tax is not a problem to me if it is a one time payment . Since my country recognizes crypto currencies as a currency there will be no legal problem. Also, the taxes on crypto gains and transactions are not too high, so no much worries.