I suppose, and I'm all in favor of cost/benefit analysis where it makes more sense to replace rock buildings with something modern with a fixed lifespan. We're

I suppose, and I'm all in favor of cost/benefit analysis where it makes more sense to replace rock buildings with something modern with a fixed lifespan. We're sorta stuck with these buildings due in part to the era in which they were built, and that razing them would cost a lot also.