Earlier quoted context omitted.
Insane, every 22 years house goes to zero value. Probably adding relatively little money can extend the life to 40-50 or so. If I'm 30 and buy a house, makes no sense to need to tear it down when I'm 52.
Its just thinking of your house as a depreciating asset instead of an appreciating one. Much like a car. I actually can't imagine wanting to live in the same house for more than 10 years.
Why? Unless your needs/life change so much that you either need to move somewhere or want a fundamentally different property. (Which of course aren't uncommon.)
But, in my case, my needs haven't radically changed. I've updated my 200 year old house to be like I want it. I can imagine a lifestyle change but it certainly wouldn't be to another house in the same area.