As long as they can continue to develop technology and new techniques for buildings its way better to have a shorter lifespan for buildings. That way no one is stuck in lead painted asbestos lined homes like many in the us are still stuck with.

actually this makes sense.

also the short-lived building thing kinda reminds me of japan. iirc the traditional japanese houses were made of wood and typically lasted no longer than 20 years before they were rebuilt. so, houses were rebuilt constantly, all the time.