If you really make enough money with Bitcoin so you can buy a house why not. Buying a house is a good thing.
A house can also go up in value, so you can make money out of the house to.
Of course and it will also be pretty cool if you do no one can say the have done that if I'm honest right ?
In fact I do not know someone that ever bought a house with the bitcoin, I only heard people talking about a sold house in bitcoin.