Most people who own their own in the UK have taken more than 20 years to pay down their mortgage.
When you stay in the same place for a long time you build an emotional attachment - neighbours, memories of raising your children, memorable family gatherings.
Downsizing is neither easy nor cheap.
When these people die, they will likely pass on their homes to their loved ones.
One could argue that Bitcoiners are attached to their stash of satoshis in a similar way to how boomers are attached to their homes.