Buying a house would be the singular reason I would sell my bitcoin...however that soesnt mean I would sell at the onset. No I would put 100 times the effort into finding the right house with property. A house that could also be an asset. Have a small family farm, some dog kennels and a work shop..
Basically I save in bitcoin for this in the future.
One day I'll be able to but that house with my bitcoin that wasn't debased daily.