I think we do, if we design them properly in the first place. For example, in 11 years the empire state building will be 100 years old, and its still an very u

I think we do, if we design them properly in the first place. For example, in 11 years the empire state building will be 100 years old, and its still an very useful and beautiful building. I think as long as you design a building to use something like conduits, you can update the wiring, plumbing, hvac, elevators, etc over time and it can continue to be useful for centuries.