As bitcoin becomes harder and harder to mine, someday, it'll run out. And with all that bitcoin available, the value so with the demand goes extremely high. So what do you think it could lead to?

If you buy a house, with a purpose to resell it, then it's fine, except when there's no more house left to buy. From there, what would you do? You might find something else to buy and sell, then house reselling will simply die. Well of course, it's just a metaphor. Real estate will be there for like forever, but bitcoin? I don't know.