There is nothing wrong in exchanging your real estate for bitcoin depending on how you feel its a good deal but the problem is striking a balance between the seller and the buyer to conclude that its a good deal. For example let's say you value the property to be $6000 which is equivalent to 1btx, how do you factor in the volatility that if bitcoin price falls to $5900 tomorrow, you are still protected. Sideways, to the buyer, how do you convince him to pay more than $6000 for you to hedge your own losses and he won't feel cheated or ask for refund should the price climb to $7000 by next week?